space to shoot left arrow key to move right right arrow key to move left up arrow key to move jump z key to transform into a robot x key to transform into a vehicle. I would prefer taking a vehicle form and move slowly to go through the ground bridge and do not let the enemy reach the other end otherwise you cannot go through the ground bridge.
Thanks to google for the backgrounds and to scratch for being so awesome. This game is not very good and has a lot of problems in it. You can never die. Sorry for those who want this game hard.