I really like the art style, and the context of the game itself is giving me a bit of anxiety, reminding me of the "Lava Chase" scenes in Rayman 3 and the first Jak & Daxter game, but I think having EVERY key as a possibility is a bit much, and the font itself even makes it hard to read some letters and numbers, and by the time I find the keys I'm supposed to press, they've already changed.
I believe the lava could be a bit faster because of how lenient it seems to be while I'm looking for the right keys, so I believe those 2 simple changes would make a great improvement on the game, and with some more polish and content, maybe a couple more mechanics to complement the gameplay, it would probably be really fun to play, nice work!