Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Arachnophilia	Maul 200 enemies to death with a sawspider.
Beginner Speedrunner	Complete the game in 1.5 hour on at least HARD difficulty.
Butcher Craftsman	Upload your level pack to the Workshop.
Butcher	Kill 1000 enemies.
Expert Speedrunner	Complete the game in 45 minutes on at least HARD difficulty.
F@$ You Harder	Complete the game on "Harder" difficulty.
F@$ You the Hardest	Complete the game on "The Hardest" difficulty.
F@$ You	Complete the game on "Hard" difficulty.
Human Slaughterhouse	Impale 50 enemies on hook by kicking them.
Ironworks Facility Completed	Beat Ironworks Facility.
Jungle Outpost Completed	Beat Jungle Outpost.
Old Military Base Completed	Beat Old Military Base.
Proficient Railgun User	Kill 10 enemies with a single railgun bullet.
Pump Up the Difficulty	Unlock new difficulty mode.
Pyromaniac	Make 200 enemies die horribly by burning alive.
Skull Apprentice	Find 30 skulls.
Skull Beginner	Find 10 skulls.
Skull Collector	Find 20 skulls.
Skull Master	Find all skulls.
Smoked Human	Impale 25 enemies on hook by kicking them.
Speedrunner	Complete the game in 1 hour on at least HARD difficulty.
Suicider	Die 200 times in total.
The Last City Completed	Beat The Last City.
Tried Hard	Repeat a single level 10 times.
Volcano Research Station Completed	Beat Volcano Research Station.