Good animation and art for the miner and his lamp. I like the concept of increasing his giddy-up movement speed by using his lantern. The limited light did lead to some blind jumps; most of the time, there was a platform to land on, but my demise in my last one was sure enough that there wasn't one. Maybe have the axe-throwing be able to stick to a surface and have a small light radius around it?
This game, with an additional similar art style, would make for a very fun, charming game.