Thank you for your comments. I wanted to use 1hp mechanics from the beginning. In fact the goal of the game is to find how to clean the level thanks to the "retry" button. I thought of a "temporal shield" got randomly from poping the compounds but hadn't the time to implement it before the end time.

Thanks for your comments. I 'm aware about the problem with "d"+"space" on dying. First i used the cursor to click on"retry" or "exit" buttons but the last level asks you to be very reactive.  You lose time while changing your hand from mouse to keyboard. That's the reason why i decided to use the "only keyboard" method. I had the same problem as you while testing but i didn't realized how to change it before the end time for the jam.

I wasn't sure which one was more difficult (level 2 or 3). I decided this order because level 3 is more chaotic. But level 2 is juyst organization. You can pop each "ballon" individually, letting the greens ones for the end.