Very interesting game! The beginning was a bit of a drag to go through, especially given you can only mine one block at a time at first and are kinda forced to buy bombs to speed things up, but once you have the rocket launcher, you're absolutely speeding through the game.
Loved the different 'biomes', though I did get a little jumpscared by the music suddenly starting out of nowhere at times xD (Though, this might be a glitch on my end, I am using Firefox after all-)
And what a cool ending! :3