Use WASD to move
Interactable Blocks and Items
Keys: Used to open doors.
Pickaxe: Can be used to mine Cobblestone blocks blocking your way through the level.
Cobblestone Block: Acts as an obstacle that can only be broken with a pickaxe. They look like massive clumps of rock (like the ones in the third screenshot).
Jump Boost Potion: Can increase your jump height for a short while. Use it wisely.