w= jump, a= left, s= crouch, d= right, o= finger gun, p= shield. Use your shield to block enemies or finger gun to eliminate them. Getting hit by the enemies removes HP. Blocking with a shield removes 1 HP and gives you 1 point while getting hit without blocking it removes 2 HP. You have a total of 7 HP. Try to eliminate as many as you can before you run out of HP.
________________ | move | bitstring | +------------+-----------+ | move left | 001000 | +------------+-----------+ | move right | 000100| +------------+-----------+ | jump | 100000 | +------------+-----------+ | crouch | 010000 | +------------+-----------+ | jump left | 101000 | +------------+-----------+ | jump right | 100100 | +------------+-----------+ | finger gun | 000010 | +------------+-----------+ | shield | 000001 | +------------+-----------+