Thank you for you nice comments! :D
Yeah the part where you "parkoured" seems hard to many people. About the one with the arrow, you have to combine the bomb and the shield. You place a bomb and then either you shoot with the shield on the bomb or you can just trigger the bomb with the shield between you and the bomb. It was meant to be a mechanic like the rocket jump, but without any hints it must be hard too understand.
Anyway, I really appreciate your feedbacks, I will probably try to cover every problems in an updated version after the jam.