Here is the full list of all 42 SCP: Blackout achievements.
Used 5 pain pills.
To be fair, you were quite nasty.
Your first death. Not your last.
Target eliminated. Brutally.
You've stumbled upon a warlock master in the middle of a powerful spell.
You found the first step on a mysterious journey.
How very suspicious...
A thank you for all the support you've all given.
You're not having any of that mess.
Just get it over quickly.
Did you not see the signs?
You did, didn't you?
You saw what you wanted, and you found a way.
You just couldn't leave well enough alone, could you?
D-1742 escaped on the easiest difficulty. Congrats?
D-1742 escaped on a mild difficulty.
D-1742 escaped from a real nightmare. You earned it.
D-1742 escaped from an impossible situation. Must be an anomaly.
You've enjoyed the taste of fear and death, and you come back for more. You've died 10 times.
Death may stop your body in these timelines, but you'll keep dying in others to press forward. You've died 50 times.
Nothing can hold you back. You will continue on. You've died 100 times.
No amount of deaths will stop you from uncovering the secrets of Site-50. You've died 200 times.
You're basically certified on the machine now, right?
You finally made it. Now what?
You've finally reached the secrets of Sublab-11.
BOOM. Splat. Nice.
You've taken power control into your own hands.
Used 20 batteries on your flashlight.
Used 50 Batteries on your flashlight.
Used 200 batteries on your flashlight.
Used 500 batteries on your flashlight.
Used 25 pain pills
Used 100 pain pills.
Used 250 pain pills.
Activated all the valves in the level.
You touched the thing. Gross. Why?
You found me. I really wish you would leave me alone, though.
You saw all the people who made Blackout possible.
He just transferred from Site-77, right?
Gain entry to lab B-103
Deal with it.
You tried to help a fellow D-Class in need.