I really dig the Artstyle. The background and especially the character look super cool. Marble blocks could be a bit more dark in color the fit with the rest of the colorscheme in my opinion. The music and the soundeffects are also pretty good.
The idea with throwing rocks down holes you can't see the bottom of and then using a rope is also pretty neat i think. The pickaxe could use some work tho. It's very finnicky to select the block you want to mine.
Another thing I enjoyed were the item descriptions, they bring that certain charm to the experience.
Also as a tip, the fly trap enemy seemed a bit too familiar to me if you catch my drift (;
I am very excited for the finished version of the game.
Well done, guys!