Here is the full list of all 17 The Lonely Helmet achievements.
Started your adventure!
Completed Level 01.
Found the hidden star.
LAZER BEX UNLOCKED!
Completed Level 05.
Completed Level 10.
Completed Level 15.
Completed Level 20.
Completed The Lonely Helmet.
Reach a Total Score of 100
Although I'm only a helmet, I somehow have hands that allow me to interact with things... weird.
Reach a Total Score of 200
Reach a Total Score of 500
Reach a Total Score of 750
Die 100 Times
Die 50 Times
Customize your Helmet