Naming a difficulty "I'm too young to die!" made me laugh, that's a small thing carrying a lot of personality. The aim and release mechanic feels right, and the little green charge bar in the corner is simple, readable feedback while you hold. The block visuals hold together well too.
Where it lost me: I died twice with 0 points, in under five seconds each time, and I honestly did not understand what killed me. I assumed falling, but something seemed to be coming from above. The "You died!" screen is instant, without even a frame showing what happened, so there's nothing to learn from.
Two fixes would cover most of it: give 2 or 3 seconds of grace at the start, and make the threat visible or audible before it lands. The charged jump is a good mechanic, right now there just isn't enough time to enjoy it.