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