Mouse - Aim and attack 1 - Lazer Sword - Melee attacks enemies at close range. 2 - Lazer Cannon - Fire long range shots at the cost of energy. wasd - move Attack enemies to have them drop energy capsules. Touch the core to pick it up, then touch energy capsules to store the energy. Take the core back to the depot to turn the stored energy into xp. Once you have enough xp, a flyer is summoned to attack enemies it touches.
All made by me.