You are right at every single point. I could give a bit more time to polish the UI but i don't trust my internet so i just submitted it ASAP hahaha, i agree with the checkpoint / repetition thing, but i prefered to play it safe and submit the game sooner. The double jump problem you had was actually due to the sphere that detects the ground, it doesn't work properly when the ground is inclined, my bad. I'm so glad that you liked the game tho ! it means a lot to me =)