First of all, thank you so much for the great feedback! I didn't have much time to work on the checkpoint system so there are a few bugs I didn't encounter during the testing. As for the control scheme, I tried using different keys for each character but it personally felt a little too difficult to control since the player had to use 10 keys at once. Normally, I intended the player to only stick to the ground below it but apparently, there are some bugs with that too. Regardless, glad you liked the spring mechanic and the concept!