This is a good effort. Little things like the level wipes are nice touches. The level design for a platformer is decent, and quite challenging. The graphics and sound/music is appropriate. Keep up the good work! 

btw, there is a bug on one of the levels where you need to jump on an enemy to avoid the spikes because if you hit the spikes after killing the enemy, the "try again" doesn't reload that character making it impossible to finish the level.

You know, it takes a special kind of courage to be in 5th grade and see what using Godot looks like and then not instantly run away because it looks complicated. Everyone around your age that I know in real life would see that thing and say “too complicated” and delete Godot. But you have the courage, the spark. You made a game!

As for the feedback, here goes. The movement lets the player go far quickly, but the tight jumps make up for it in difficulty. Honestly, the best part is that you have the skill to playtest a game that’s rather tough. I myself spent like 15 minutes clearing Level 5 and I like to think of myself as a pretty skilled gamer. I liked the challenge a lot.

The visuals fit together surprisingly well when they came from various sources. I especially liked that transition. I liked it music as well.

I needed little bit of imagination to see where you’re coming from with the theme.

Pretty fun platformer! I like the visuals. I don't know if it was intended this way, but after the jump the character descends very slowly, but I can't call it a disadvantage. Very good job!