Feels more like a puzzle game than mining game. I already spent 2.5 hours trying to figure out how to get all gems in ver 1.2 without dying but I finally figure it out. So mark my words I WILL beat your game until october 25.
Also drilling blocks by jumping by default is actually pretty inconvinient. Add ladders or flying (which will consume fuel) because going up once you got down is really hard. Game is too hard and I like it.