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