Thank you so very much for your feedback! It means a lot that you were willing to take the time to provide it. I'm glad that you enjoyed it and felt that it stayed true to the platform it simulated. :)
Yeah, I won't lie, I kind of rushed the code for the key respawn time. That is definitely something I plan on doing more testing and balancing with. My theory with making this demo submission was that I wanted to showcase how challenging the game could get, but I think I may have overdone it, haha. These will be the beginner levels, so I need to be nicer to the player here. Being the developer of the game, I can sometimes forget that difficult for me can be near impossible for a first-time player.
As for the double jump mechanic, I noticed it acting a bit funky myself when playtesting after submission. Unfortunately, until the judging process is over, I can't upload any updates to the game. However, I did do a massive overhaul on the mechanics and controls, and I believe I may have fixed this problem as well as smoothed out the rest of the controls. Once judging is finished, I will upload all of the updates to the demo that I have made.
Thank you again for your feedback. If I never got any, I would never know if something was working well for the players or not, so thank you! :)