Good game, I would suggest making mouse click to mine or break objects to be held instead of just released.
Thanks for the feedback. A resource or object can be destroyed with a mouse click while being targeted. There was a lack of explanation in the game.
Below is an article I wrote a few days ago about the cave-dungeon-generation. Hope this helps!
https://concode-studio.itch.io/p3/devlog/260310/cave-dungeon-generation