BIO MENACE

Super Plasma Bolt - hold down the UP-key for 2 seconds till you hear "Charge up". Then press fire. This will cost you one hit.
Fireballs - move six or seven times from left to right and then press jump. This will cost you one hit.
Shield - move six or seven times from right to left and then press jump. You get a different colour and a shield appears. Last for a very short time.
Invulnerability - hold down the UP-key for 2 seconds then press the DOWN-key. You will blink and be invunvulnerable for a very short time.