Guide

Finishing the prologue will get you the “Prologue of the Beginning and the End” achievement.

Once you start Chapter 1, you can easily obtain a few achievements just by messing with Okabe's phone:

• “Memories of the Self” – Awarded for viewing sent emails
• “Memories of Another” – Awarded for viewing received emails
• “Vision Projection” – Go to the phone settings and change the wallpaper
• “First Sound” – Go to the phone settings and change the ringtone for calls

Read through the chapter as normal. When you reach the section where you need to set the timer on the PhoneWave, you can receive the “Homerun-level Clumsiness” achievement by typing the wrong number into the phone ten times. Type anything you want, and once you get the achievement, type in 120# to proceed.

When you receive an email from Mayuri with the subject “Upa...”, reply with "Upa." This will reward you with the “Resonant Reaction” achievement for replying to an email. When Mayuri replies to you, open the attachment in the email to get the “RaiNet's Mascot” achievement.

When you receive an email from Faris with the subject, "The decisive battle is close at hand nya," reply with “Red Southern Cross,” then open the attachment in Faris’s reply to make progress on the “Princesses of Chaos” achievement. We need one more email to get this achievement, but that will be much later in the game.

In this chapter, Lukako will send you an email with subject, “I made sweets.” If you reply to this email chain correctly, you can receive the achievement "Cruel Sister."

• Reply “Family” to the “I made sweets” email
• You will receive an email titled, “About my family members.” Reply with “My sister”. This email is received only if you pick up a call from Mayuri on 8/01 at 14:29
• You will receive an email titled, “About my sister.” Reading it will reward you with the “Cruel Sister” achievement

During the chapter, you will have the choice of picking up a call from Mayuri, and later from Kurisu. Ignoring one of these calls will award you with the “Identity of Complete Isolation” achievement. This achievement is granted for ignoring any of the calls during the game, and of course, you can make a save, ignore the call to get the achievement, then load your save to pick up the call if you’d like.

Picking up the call from Mayuri will get you an extra scene with Mayuri and Faris. If you pick up the call from Kurisu, she will then join you at the Yanabashi Shrine.

Chapter 3 does not have any quick achievements or decisions to make if you are following this walkthrough. However, if you are going for the Froggy Fad Demise achievement, the first email required is in this chapter. Please check the dedicated section of this guide for more information about this achievement.

There is a scene where Daru calls you, and you can answer it to see a scene with him and Mayuri, or ignore it for a scene with Kurisu.

Completing the chapter will reward you with the “Butterfly Effect’s Divergence” achievement.

Suzuha will send you an email titled, “Akihabara's.” Reply with "peaceful." Suzuha will later send you a reply, and reading it will get you the "Warrior Girl’s Pride" achievement.

You can get the “Discontinuous Qualia” achievement for correctly replying to the following emails from Kurisu:

• You will get an email titled, "Did you write it?” Reply with, “Report”
• Kurisu will reply with “Please?" Reply to her with, "Cup noodles"
• You will receive an email titled, "Favor to ask." Reading it will get you the achievement. You can reply to it if you want, but doing so is not necessary.

You can also get the “Cat's Tea Time” achievement for correctly replying to the following emails from Faris:

• You will get an email from Faris titled, "Sign of increasing misfortune." Reply with "He."
• You will later receive a reply titled, "About abilities." Reply with "NyanNyanian"
• Later, you will receive a reply titled, "Cat tongue nya." Reading it will get you the achievement

During this chapter, you will also unlock “25% CG Achievement” after unlocking 25% of the game’s CGs.

At the start of the chapter, you receive a phone call from Faris. If you pick it up, you get additional scene with Faris. If not, you will get an additional scene with Mayuri.

When you receive an email from Mayuri titled, "What made me happy today," make a save and then reply with "cosplay." Mayuri will reply with, “The reason,” and reading this email will get you the "Passions Best Forgotten" achievement.

Load the save file you created just before replying to Mayuri, and this time reply to her first email with "Fubuki-chan and Kaede-chan." Mayuri will reply with "Huh?", and reading this email will reward you with the "Princesses of Chaos" achievement.

At the start of the chapter, you have an option to call Mayuri. If you do not call her, you will get an extra scene. Later, there is another option to call Mayuri or Lukako for additional scene.

At one point in the chapter, you will have the option to call Kurisu, Mayuri, or Daru. Calling one of them will get you an extra scene with the character you called. If you do nothing, you will get a scene with Suzuha instead.

When given the option to send a D-Mail at the end of the chapter, make sure to save, then do nothing to reach the first ending of the game, Suzuha’s. This will award you with the “Irreversible Reboot” achievement. Load the save file you created and send the D-Mail in order to progress the story further. You will receive the “Metaphysics Necrosis” achievement for chapter completion.

During this chapter, you will also unlock “50% CG Achievement” after unlocking 50% of the game’s CGs.

After some time, you will get a call from Kurisu. If you answer it, you will get a scene with Kurisu. If you ignore it, you will get a scene with Faris.

When given the option to send the D-Mail at the end of the chapter, make sure to save. If you do not send the D-Mail, you will achieve Faris’s ending, and with it, the “Isolated Jamais Vu” achievement.

Once you’ve done that, load the save you made earlier, and this time send the D-Mail to proceed to the next chapter. Finishing the chapter will award you with the “Made in Complex” achievement.

Chapter 8 is quite straightforward; the only decision is right at the end. You will have the option to either call the PhoneWave or not. Save the game, and then choose to not call the PhoneWave to reach Lukako’s ending. This will award you with the “Link of Corruption and Rebirth” achievement.

Load the save you made earlier, and this time, do call the PhoneWave. You will reach the next chapter and get the “Fractal Androgynous” achievement.

Proceed normally through the chapter. Later you can call the PhoneWave, or you can do nothing for an extra scene, during which Kurisu will call you. Answer it for another extra scene. Later, you will get another call from Kurisu, and if you ignore it, you will get an extra scene with Moeka.

When given the option to send the D-Mail at the end of the chapter, make sure to save, and then do nothing to reach Moeka’s ending and receive the “Hide in Darkness” achievement. After that, load the save and send the D-Mail to end the chapter and proceed to the next one. This will award you with the “Endless Apoptosis” achievement.

During this chapter, you will also unlock “75% CG Achievement” after unlocking 75% of the game’s CGs.

Chapter 10 will play out based on your decisions in the game. If you have followed this guide, you will reach Mayuri’s ending. Completing this ending will reward you with the “Stardust Sky” achievement.

Only two endings remain. First, we will clear Kurisu’s ending, which requires at least 1–5 true ending flags out of a total of 6 flags. You receive true ending flags based on your replies to Kurisu's emails. Acquiring all 6 flags will put you into the true ending for the last chapter instead of Kurisu’s ending. First, we’ll cover how to get the first 5 flags to reach Kurisu’s ending, and then the last flag for the true ending.

The first flag is in Chapter 4, so load to the start of that chapter. (If you were not saving your progress, you can load one of the quick saves, which are created at the start of each chapter.) Reply to Kurisu’s emails based on the following guidance:

• You will get an email titled, "Did you write it?" Reply with "Scientist."
• You will then get a reply titled, "Scientist? ?". Reply with "Bad scientist."
• You will then get a reply titled, "Bad scientist." Reply with "Dad joke"
• You will get a reply titled, "Home Alone." Reply with "Outsider."
• You will then get a reply titled, "Ehhh?" Reply with "Disgrace."
• You will then get a reply titled, "Staring at my hand." Reply with, "Why am I still here?"
• After all this, you will get an email titled, "Being here." Reading this email will award you with the first true ending flag. This will also award you with the "Genius Girl's Melancholy" achievement

Proceed to Chapter 5, and you will get an email from Kurisu titled, "Plans." Reply with "Traveling expenses." Later, you will get a reply titled, "Idiot!" Just read it, and after some time, you will get another email titled, "( ´ · ω · `)." Reading this will get you the second flag.

Continue all the way to Chapter 7, where we will get the third flag. You will get an email from Kurisu titled, “The key (ﾉД `).”

• Reply with, “I don’t have a key.”
• You’ll get a reply titled, “( ° д ° ).” Reply to this with “Security.”
• Sometime later, you will get a reply titled, “You’re delusional, I know.” Reply with “Reality.”
• Later, you will get a reply titled, “Reality.” Reading it will grant you the third flag.

The fourth flag is in Chapter 8, and it is quite simple. You will get an email from Kurisu titled, “Explain yourself!” Reply to it; there is only one reply option. Kurisu will later send another email titled, “From an unpopular girl.” Reading it will grant you the fourth flag.

The fifth flag is at the end of Chapter 9. You will get an email from Kurisu titled, “Contact me, idiot!” Reply with “Worried,” which Kurisu later replies to with, “Re: Re: Contact me, idiot!” Reading it will grant you the fifth flag.

Now you have 5 flags, so proceed to Chapter 10. You will get an email from Kurisu in the middle of the chapter titled, “Where are you now?” This email leads to the 6th flag, so make sure to save, and then ignore it to reach Kurisu’s ending.

Finishing Chapter 10 with Kurisu’s ending will reward you with the “Paradox Meltdown” achievement.

After you finish the ending, load the save you created when you got the email from Kurisu, and this time reply with, “Where you are.” You will get the 6th flag, and now you’re set to reach the true ending.

Chapter 10 plays out the same as during Kurisu’s ending, even the credits roll—but don’t worry, because the game continues after that with the true ending

Completing the true ending will award you with the “Open the Steins Gate” achievement, and if you got all the previous endings as well, you will get the “All Worldlines Complete” achievement for completing all endings.

Completing the true ending will also unlock “100% CG Achievement” after unlocking all of the game’s CGs.

After the credits roll, there is a short after-credits epilogue section. After you finish that, you are presented with a black screen. If you’ve finished all other endings, wait on the black screen for about a minute for a secret post-credits scene.

“Identity of Complete Isolation”

To achieve this, all you need to do is ignore a phone call. There are plenty of phone calls that you can ignore during the game, but for example, there are two in Chapter 2 and another two in Chapter 7, so if you have not received this achievement yet, load a save in one of these chapters and ignore a call.

“Message of Oblivion”

You probably got this achievement randomly when you were skipping chapters, but we’ll mention it anyway just in case. All you need to do is ignore emails. Sounds easy, but it is a bit more complicated than that. You need to ignore an email and then either finish the chapter or change the worldline so that the email is not read at all. We feel the easiest way to do this is to load a Chapter 6 save or later and just ignore all emails received, skipping to the ending of that chapter.

“Froggy Fad Demise”

You need to reply correctly to a set of emails to receive all Gero Froggy wallpapers.

The first batch is in Chapter 3. You'll receive an email from Lukako titled, "About Frogs." Reply with "Gero Froggies." Lukako will reply with email titled, "More news about the frogs." Just open the attachment and view all the wallpapers.

The second and third batch are both in Chapter 7 and are a bit trickier to get. You need the first and second true ending flags, because the second batch of Gero Froggy wallpapers can only be acquired in a true ending flag email from Kurisu. So make sure you load the save where you have those flags, and then proceed based on the following guidance:

Kurisu will send you an email titled, “The key (ﾉД `).” Make sure to save, as we will need to return to this email for the third batch of wallpapers. Reply with, “I don’t have a key.”

• You’ll get a reply titled, “( ° д ° ).” Reply with “Frog.”
• You’ll get a reply titled, “Gero Froggy.” Open the attachments and view all the wallpapers there.

Now load the save you created when Kurisu sent you the “The key (ﾉД `)” email, and this time reply as such:

• Reply with “Home”
• You’ll then get a reply titled, “Home.” Reply with, “Hyahha.”
• Later, you will receive an email titled, “GOGOGOGOGOGO” Reply with, “I’m gonna give it to you straight.”

You’ll receive an email titled “Blazing Heart.” Open the attachment and view the rest of the Gero Froggy wallpapers. This should reward you with the “Froggy Fad Demise” achievement.

“Hero of RaiNet”

You need to collect all 13 summaries of episodes from the fictional anime RaiNet. These summaries are received in 5 emails over several chapters, from various characters.

The first one is in Chapter 1. You will get an email from Mayuri titled, “Upa…“. Reply to this mail with “Upa” and then reply with “Kakeru-kun“. Mayuri will then send you an email titled “It’s interesting.” No reply needed, you just need to open the attachments to get the first batch of summaries.

Go to Chapter 3, and you will receive an email from Faris titled, “PHANTASM is the cat's meow.” Reply with "Theme Song." Faris will reply with an email titled, "RaiNet OP 2." Reply with "RaiNet Kakeru." You will then get a reply titled, "RaiNet Ep. 13." Open the attachment in the reply and go through all the pages.

Now go to Chapter 4; the remaining three summaries are there.

• First, you will receive an email from Mayuri titled, "Speaking of lotteries." Reply to it with “Magazine.”
• You will receive a reply titled, “Going out? Lelele.” Reply with “Crunchy-kun.”
• Mayuri will reply with, “About Luka-chan.” Reply to it with “Kakeru-kun.”
• Finally, you will receive a reply titled “Kakeru-kun” with the attachment. Open it and read all the summaries.

The fourth summary is quite simple to get. You will receive an email from Lukako titled, “About RaiNet,” which includes the attachment with the episode summaries.

The final RaiNet email is from Faris. It’s titled, “Sign of increasing misfortune.”

• Reply with “He.”
• Faris will reply with “About abilities.” Reply with “Chinchilla Start.”
• You will get a reply titled, “Re:Re:Ep. 8.” Reply with “Ep 8.”
• Finally, Faris will send you an email titled, “About Ep 8.” Open the attachment there and go through all the pages.