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