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