I'm glad you liked it!
Early on, I wanted that section to be a little longer + have lyrics for it as well. I decided against it, since I didn't like what I drafted up for it, but still wanted to incorporate it in somehow.
This was a nice game. I especially liked how it ended, since it validated my concerns through most second round of finding things for the potion, when I ended up sacrificing things I really didn't want to sacrifice to try and get the temperature right. I also really liked the fact that you could consider choosing things that go over the target temperature, and then use cold items to bring it back down.
Thanks for the advice. When I started developing the game, the movement actually was faster than what you see now, but it was also at odds with the camera. Ideally, I would've had the camera show things further ahead of Briquette as you moved through the level. But since this was the first time I even made a camera object, I opted to have it move to keep the player dead in the center, which forced me to make my platforming challenges more separated from each other and compact, such that it required only a little movement from the camera to fully grasp the full picture of the challenge. As a result, the speed was also reduced.
As for the time it takes to charge, I also agree that it would also help. Ultimately, I want to improve Briquette's movement and challenges such that there aren't as many pace-breakers.