Here is the full list of all 21 High Hell achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Beat Professor Meth without killing any chimps.
Beat level 7 without being shot.
Beat level 2 without shooting.
Beat a level in under 5 seconds.
Beat the game.
Excel at a workout.
Beat level 15.
Beat level 10.
Die in under 5 seconds.
Beat level 05.
Found the first DMEN doll.
Steal the Soulshot.
Found ten DMEN dolls.
Found all the DMEN dolls.
Killed all the pups.
Get killed in the tutorial level.
Get a global highscore of over 3,300,000 points.
Get 15:00 or less on the best times sum.
Burn everything.
Speedrun the game in 20 minutes or less.
Score a goal.