Complete the following achievements to unlock Xbox Live Gamerscore points

Achievement	How to unlock
Everyone has a weakness (15 points)	Defeat G1 Megatron with G1 Starscream (MP only).
Jazz Hands (25 points)	Defeat Megatron with Jazz using melee (MP only).
Megatron's Master Plan (50 points)	Complete the Decepticon campaign on expert with a 75% completion.
Prime Target (15 points)	Defeat G1 Optimus using G1 Megatron (MP only).
Quest for Survival (25 points)	Win a match on ANY game mode on each new map (3 maps).
Sideswiped (15 points)	Sideswipe defeats Sideways (MP only).
Soundwave Superior (15 points)	Soundwave defeats Long Haul (MP only).
The Autobot Run (50 points)	Complete the Autobot campaign on expert with a 75% completion.
The Ultimate Weapon (15 points)	Defeat G1 Megatron using G1 Optimus (MP only).