[1 to 9] - Select Item [Click] - Place or Mine [WASD] - Move / Jump [E] - Open/Close Inventory [E+hover] - Open / Close Chest, Crafting Table, Door [Space] - Drop single tile from a stack while dragging. [F] - Eat food [N] - Label a sign or chest [Q] - Drop item [P] - Pause / Unpause [T] - Talk / Command [O] - Save your game [M] - Music / Sounds [Shift] - Sprint To craft the spawn egg for the first boss, use two bones. Then spawn it and kill it to get the spawn egg of the next boss. Repeat the process once you kill the next boss.
Thanks to griffpatch for the original project.