Thanks for the feedback.
I agree with the gun being op and it being just an obstacle. At first I wanted to have a bossfight at the end, but I had to scrap it, because I was really running out of time and I never made a boss before, so it's just a big blob that you have to shoot....
I agree that some platforming sections aren't fun at all, but I don't know where I went wrong with the super jump. Could you please tell me what aspect of the super jump is bad in particular?
Glad you liked the collectables :D