Press START, choose "Extras", then "Unlockables" to enter the following cheat code and unlock Ratchet and Shockwave: UP, RIGHT, DOWN, LEFT, UP, START. Additionally, unlock the for play in Multiplayer by completing the campaign.
ACHIEVEMENT - HOW TO UNLOCK Prime (125 points) - Complete the Campaign. Completionist (25 points) - Destroy all hidden TRANSFORMERS symbols in Campaign. Road Kill (25 points) - Destroy 30 enemies while in vehicle form in Campaign. Grenade Expert (25 points) - Eliminate 20 opponents with the Flak Grenade in Campaign. Recruit (25 points) - Survive 60 seconds in a public multiplayer match without being killed. Power Surge (25 points) - Use an active ability 5 times in a public multiplayer match. The Champion (25 points) - Reach level 20 in any single class in Multiplayer. Chapter I (25 points) - Complete Chapter I on any difficulty. Top Score - Bumblebee (25 points) - Complete Chapter I with a score of 1000000 or more. I know what I’m doing! (25 points) - Change into vehicle form before reaching the change form tutorial in Chapter I. Boot Stomper (25 points) - Kill 3 Enemies with Bumblebee’s Kick Ability in Chapter I. Chapter II (25 points) - Complete Chapter II on any difficulty. Top Score - Ironhide (25 points) - Complete Chapter II with a score of 1000000 or more. Seek and Destroy (25 points) - Kill 25 Enemies using Grenade Blossom in Chapter II. Rule With An Iron Fist (25 points) - Kill 20 enemies with Ironhide's Melee attack in Chapter II. Chapter III (25 points) - Complete Chapter III on any difficulty. Top Score - Mirage (25 points) - Complete Chapter III with a score of 800000 or more. Body Count (25 points) - While holding out for Reynolds to send backup in Chapter III, 30 Decepticons are killed. Good Driver Discount (25 points) - Avoid taking any damage from Starscream’s proximity mines in Chapter III. Chapter IV (25 points) - Complete Chapter IV on any difficulty. Top Score - Soundwave (25 points) - Complete Chapter IV with a score of 1000000 or more. Serrated (25 points) - Kill 10 Autobots with Laserbeak's ram ability in Chapter IV. Stunning! (25 points) - Stun 10 Autobots with Soundwave's stun ability in Chapter IV. Chapter V (25 points) - Complete Chapter V on any difficulty. Homewrecker (25 points) - Wipe out all secret base ground defenders within 60 seconds in Chapter V. Furious Flyer (25 points) - Fly through the canyons after Air Raid in 120 seconds in Chapter V. Surprise Package (25 points) - In the air battle, activate Starscream's Guided Missile ability 5 times without dying in Chapter V. Chapter VI (25 points) - Complete Chapter VI on any difficulty. Top Score - Megatron (25 points) - Complete Chapter VI with a score of 2000000 or more. Autobots are Weak! (25 points) - Defeat all 3 waves in Megatron's Lair without dying on Hard Difficulty in Chapter VI. Overlord (25 points) - Drain 5000 health from enemies in Chapter VI. Chapter VII (25 points) - Complete Chapter VII on any difficulty. Fleet of Foot (25 points) - When one Driller arm is attacking, avoid all attacks in Chapter VII. Counting Coup (25 points) - Use only melee attacks on Shockwave's power core to make him retreat to his cryo platform. Primed for Combat (25 points) - Activate Optimus' Shoulder Rocket ability 5 times without dying in Chapter VII. Sacrifice (25 points) - Be the first one eliminated in a public multiplayer match.
