It's a nice game, I think that you should give better feedback when the dinosaur does the kick, and if you keep pressing the to walk the buy became stuck in the wall to resolve that you could set a physics material 2d in the boy and set Friction to 0.
thanks for your comment, we didn't make the power-ups have more impact on the player because of the time that we have, and was the first time the artist doing pixel art. The left and right collectibles change the eyes of the skeleton, the jump collectible is the one that changes the fire color, we had the idea of making him legless when he couldn't walk and we are struggling to represent the jump ability, that is why we choose to change his fire color.
If you had implemented the game audio the feeling of your game would be awesome, and I think that is easy to implement this in Godot. And you could try to think in some other game mechanic, to bring something different/unique to your game.
You need to use spirit form to fly at the flying platform, use his power to drop a box that is there than put it above the button, and then use Yin(Black) power.
