No, I’m Not a Human – “May Death Cleanse Us of Our Sins!” Achievement Guide | Cultist Ending

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May Death Cleanse Us of Our Sins Achievment Guide

Getting the May Death Cleanse Us of Our Sins! achievement in No, I’m Not a Human isn’t the easiest thing ever. Sure, it’s not as frustrating as getting the Martyr achievement is, but still not easy.

In order to get it, you have to reach a specific ending, and getting there requires you to replay the same stretch over and over just to get every condition right. It’s something you constantly do in the game, hence the importance of Save Scumming.

Back to the achievement, though – here’s everything you should do to get the Cultist ending and unlock the May Death Cleanse Us of Our Sins! achievement in the game.

Days 1-6: The Setup

The first six days are basically setup time. Not much chaos yet, but you need to prepare for what’s coming. Here’s what to focus on:

  • Stay alive. Seriously. Don’t do anything reckless yet.
  • Hoard humans. You’ll need them later. Try to keep as many alive as possible. (I recommend reading this guide to know which are the signs of Visitors in No, I’m Not a Human).
  • Get at least one FEMA notice, ideally two. You can obtain these from FEMA agents, firefighters, or guest bribes.
  • If you don’t want to lose progress, grab some kombucha so you can save on Day 7. To get it, watch the TV and write down the number for “ForRest.” (This one changes with every playthrough, so you need to write it down.)

Days 7-11: The Cultist Run

Things start heating up from Night 6 onward. You’ll notice burning buildings outside, and guests stop showing up at your door. That’s your signal – now’s the time to start locking in humans. Here’s how to play these days:

Day 7

Skip it, unless you’ve got shady guests. If you’re unsure about someone, chat and test them first and refer to my guide above.

Night 7

If the firefighter guy appears, that’s perfect. Try to snag your second FEMA notice from him. Keep recruiting humans if it’s safe, but don’t take big risks unless you’re 100% sure they’re clean.

Also read: Build a Zoo Guide to Big Pets and Mutations

Day 8

Skip again. Same logic as Day 7. By now, you must have at least two humans, but more is better.

Night 8

FEMA will take two humans. Immediately after, the Cultists show up.

Now, your job is to recruit two new humans as replacements. If you’re unsure about anyone, play it safe – you’ll get one more night before FEMA returns.

Day 9

Give the FEMA notices to two humans. If you only have one notice or one human, don’t panic – you’ve got one more night to fix that. Otherwise, you’re rolling dice with the next FEMA event.

Night 9

If your two humans have their FEMA notices ready, don’t open the door for anyone.
If not, you can risk it by letting potential guests in or refusing them, hoping to grab another notice.

Day 10

Skip again. Keep the pattern going.

Night 10

FEMA arrives and takes the two humans with notices.

If you only had one notice, things could go sideways, as FEMA might take one of the cultists instead.

Then, the Cult Head shows up. Tell him they’re alive, run through the dialog, and he’ll leave. If all your people survived, they’ll remain in the house after this chat.

Day 11

Skip the day as usual.

Night 11

The Cult Head returns for another talk.

At the end of the conversation, you’ll get the “Join” option – and that’s what you need to pick.

Choose it, and congratulations – you’ve officially achieved the Cultist ending and unlocked the “May Death Cleanse Us of Our Sins!” Achievement.

Wrapping up

That’s it. No secret steps, no hidden mechanics – just precision, timing, and a lot of patience, combined with smart saving and reloading if things don’t go your way.

If you followed everything here, you’ll finally get that achievement popup after the last chat with the Cult Head. If you manage to do it any other way, or if you still have questions – let me know in the comments down below.

Calin Ciabai
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