You will need a good pickaxe, torches, ladders, explosives and other tools that you can get from a merchant and exchange them for coal, iron and other minerals.
The goal of the game is to dig up the treasure room and build a tunnel to it. Control: For mobile: Left stick - Move Right stick - Destroy blocks Button with block - Set block Trash button - discard item For PC: WASD - move LMB - Destroy blocks / place a block E - action I - inventory Q - throw an item Buttons 1-5 - quick access bar