Congratulation you are now free to fly towards exploring the depth of game development :3.
Yes it is a progressive stage system, where if you use the current stage mechanic you gain experience until you hit a threshold and unlock the next stage. Gliding (raccon suit) goes to flapping (short up burst) goes to flying ("infinite fly" but still respecting gravity) and then theres one more.
Very happy to hear you liked the animations, i really gave it my best.
Thank you very much for playing our game.