Here is the full list of all 17 NOT the Hero achievements.
Getting into the swing on things
What is going on
Still no Idea whats happening
Okay so I may be a hero
Betrayal
Nice work!
Nice work! really...
Killed the first boss
Killed the second boss
You are a bad person
Killed the 4th boss
Learnt to jump
Learn how to blow yourself up
You can now throw a rock
Got the grenade skill
Got the laser skill
Got the OP ability