Here is the full list of all 16 Endless Heck achievements.
You died for the first time
Die 13 times
Die 50 times
Die 100 times
Die 250 times
Die 500 times
Die 1000 times
Reset your progress
Complete a Level
Complete Level 10 in Rogue Mode
Complete Level 50 in Rogue Mode
Complete Level 100 in Rogue Mode
Complete Level 1000 in Rogue Mode
Complete Level 10000 in Rogue Mode
Complete Level 100 in Sprint Mode
Complete Level 100 in Explode Mode