Wi-Fi Tokens
Several of the cheat options in "Transformers: Decepticons" are unlocked by collecting Wi-Fi tokens throughout the main game. To unlock the Psycho Cars cheat, which makes all the cars in Free Roam mode attempt to crash into you, collect 500 tokens. For 1,000 tokens, you can unlock the Infinite Energy cheat. Additionally, tokens can be used to unlock characters and vehicles. The Love Cruiser vehicle is unlocked at 250 tokens, the Stunt Car at 750 and "Scout" at 1,500 tokens..
Police Choppers
Once you've gained the ability to scan and take control of helicopters at Level 5, target and scan a police chopper. Select the chopper and turn it completely black. The abilities you will gain piloting this chopper depend on your ability level. At Level 5, you will be invisible to enemies, as well as invincible to autobots on the street and police cars. At Level 80, however, you will be able to fly through mountains and use unlimited energy.
Miscellaneous Cheats
To open Armageddon mode, simply complete the main game. With this mode activated, every car and enemy will explode when destroyed. However, at any time during the game, regardless of wether or not you've completed it yet, you can press "Start," then go to "Vehicle Form" and "Confirm." Return to game by pressing "B," and your wanted level will be reset to zero and you'll also have full health.
Floating
This cheat allows players to float to the top of any level using any vehicle form. First drive to any tall building that marks the boundary of a level and use "X" to climb to the top. Once you've gone as far as you can, your vehicle will begin to fall back to the ground. As soon as this happens, tap "X" repeatedly and keep looking up. It will then appear as if your Transformer is climbing to the top of the wall. Do not touch the directional pad, and your vehicle will slowly float to the very top of the level.