To beat it just keep kicking starscream in the ass/his back and then pick up the allspark/cube the hit him with it. Then you play as megatron and kill him. I used legit cheats from allspark wars wi-fi:super jump armageddon mode and infinite energy and I was G1 starscream and I didn't go to an event you can get it from 2,500 wi-fi tokens.
http://www.bebo.com/ luapirate
Songs:
Infinite Dimensions - Krater
Vagabond - Ready For Chaos
Darwin - Peak 1.1
Scott Brown - Roll The Track
Firefly - Dimensions
Dawin And Entity - End Of Time
Scott Brown - Taking Drugs
Fracus - Snowstorm
K90 - Red Snapper