Wall jumping is bad. You need to buy Super Meat Boy and play it for a minute, than implement such a system...

No main menu feels poor. This is half an hour. Man. I'm doing menuses in my games in no time.

Alt tabing the game and popup menuses like in 2000' Windows??? Seriously? Why? BAD IDEA too!!!

Having tree different attempts over one level is good, but levels are very long imo.