It's pretty hard for those of us with untrained ears... I have natural (untaught) relative pitch abilities, but I can't hear more than one note in a chord >_<
It's easier to do survival by not killing anything... You should make more enemies spawn after a while in survival so you have to kill things, but whatever, meant I didn't have to try too hard to get those achievements :D
GAMEFREEK, you're just not trying the right things. Try experimenting a little, play around with what you have and see what you get. Don't think about what you're trying to achieve.
Intro at the beginning goes too slow. Grammar error: "with a lonely prisoner you." doesn't sound quite right, perhaps "with you as its lonely prisoner" or "with you as a lonely prisoner inside."
Too short, frequently you queue up stuff from the shop to give to people, only you've picked up their cash and wander around like an idiot, bad english in the words, no animation moving sideways sometimes... This is a pretty poor game really.