Very simple game, got stuck on a few puzzles late game but it was only one or two but you can complete it if you just brute force it after a bit.

this guide is what I read off of right here [www.riotbits.com]

Do not look at the spoiler below if you want to complete all the achievements without help


To get all the achievements 100 percent, you just need to complete the game with every level at 3 stars, its that easy!

What?? Its just doom guy