Neat game! Nice concept, I like how it's not the same person respawning but different miners. The pixel art is cute and nice and the SFX is very well done.
Some points of improvements:
I think maybe a jump button and a mining upwards button might help because sometimes I accidentally mined down but I can't mine above me.
There isn't really a goal, at least not from what I understand, I think adding a goal or making it clearer would be nice.
Overall it's a really nice game, so good job :D