played your game for 30 minutes or more.
one major thing that needs to be solved: the game hints at a top-down but the mined resources behave as if affected by a 2D platformer's graphics. decide: either go full platformer (like Dome Keeper), or keep it top down.
I've also noticed some visual bugs with the tiles after they've been destroyed.
note: at the current rate of unlocks, after a certain point, resources are no longer used for upgrades, they just keep on piling to the resource counter. either make actual useful resources scarce or scale up the upgrades or find another use for tier 1 and 2 resources.
other than that, the core loop is fun, good job.