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.
Die in under 5 seconds.
Found the first DMEN doll.
Steal the Soulshot.
Found ten DMEN dolls.
Found all the DMEN dolls.
Beat level 05.
Beat level 10.
Beat level 15.
Beat the game.
Killed all the pups.
Get killed in the tutorial level.
Beat Professor Meth without killing any chimps.
Beat a level in under 5 seconds.
Beat level 2 without shooting.
Excel at a workout.
Beat level 7 without being shot.
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.