way my achievements dont unlock anymore ?

Since you're using NCS music, you should add them to the game credits. That's literally the only stipulation for using the music. https://www.youtube.com/watch?v=B-Jj017-2pQ

First

lol this was a mess game. the final "boss" is so fricking easy. why did i play this? how this game got to my library? such mystery

I've completed the whole game and waited in the main menu for my 5000 achievements to unlock, but 64 of them didn't unlock! Am I doing something wrong, or is that a bug?