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