Thank you so much man! :D
I am so happy to hear you had fun. The fact that you took the time to play my game and leave feedback means the world to me and I truly appreciate it.
To address your points:
1) You are absolutely right, the Air Jump can be quite easily spammed and you can brute force your way through a lot of puzzles, but I wasn't sure I wanted to restrict the player freedom with a stamina bar, and I didn't have enough time to do testing for the puzzles with a stamina bar so I just decided to go with the unlimited jump.
2) Game size is unfortunately a side effect of Unreal, most final packaged versions it spits out are very big, but will keep this comment in mind and try to reduce the size in future! I must make sure even people who don't have a fast net connection are still able to play the games I make so it is a very valid feedback.
3) Oh trust me man I am more sad than you that I could not put any music as I feel that would have elevated the experience by so much, but I could not find any music that matched the style I wanted in the time plus searching Creative Commons for music is hard! (never did it before so didn't know)
But once again, thanks so much for playing and I hope you have a great day!!
:)