Cool little package, The music was a lot of fun and I like that everything starts back up when you fail (since you will). Overall a fun exercise in figuring stuff out!
My biggest piece of advice would be when making a game where figuring out how to play the various minigames is most of the point, make doing the right and wrong thing more obvious.
There were several places where I wasn't sure if you might be using another key or not, and there wasn't a way of knowing if that's what I was getting wrong (I'm looking at you lock puzzle). Even something as simple as having a chime when I did something right or a more obvious messup visual or audio effect when I hit the wrong key would be helpful. Also I do not have the reflexes for that coffee game, haha.
Highly recommend people browsing around give this one a try :)