Here is the full list of all 30 SEUM: Speedrunners from Hell achievements.
Hell Yeah! Now you can sleep.
We salute you! \m/
Finished 100% of the game... or did you?
Return all yours beers.
Play SEUM more then 66 hours.
High pitched story.
Perform eight rituals.
Play Endless mode 66 times.
Run 666m in the Endless Mode.
Be alive longer then 6 minutes.
Gotta catch 'em all.
Worship the Satan.
Win 10 peaks.
Top a friends score on the Leaderboard.
Complete one Heliku.
Master of all four powers.
Set your mouse on fire!
Die 666 times.
Set balerina score on one level, and be fabulous.
Finish one zone in Speedrun mode
Best of the best.
Finish level in exactly 6.6 seconds.
Retry 666 times.
Just keep swimming.
Perform head-banging.
Jump 666 times.
Shoot fireball 666 times.
Get killed by everything.
Perform Butt First on one level.
Get the "Über Skull" time on one level.