At the main menu, press Up, Right, Down, Left, Up, Left, Down, Right, Up, Down, Up, Down to unlock all options at the "Bonus Features" menu.
Win all Challenge Cup events to unlock the "Flipped-cam", "Mashed-cam", "Oz-cam", and "Retro-cam" options at the "Bonus Features" menu.
During the pre-race countdown, press A on the on the fourth beep.
At the main menu, press Up, Right, Down, Left, Up, Left, Down, Right, Up, Down, Up, Down to unlock all bonuses.
Successfully complete the game to unlock Ragnarok in local multi-player mode. Successfully complete the game on any difficult setting to unlock a mech called Ymir. Note: The Ragnarok mech is a perfect blend of armor, firepower, and heat design as long you do not use the lava gun constantly. The Ymir has greater firepower than the regular chassis of Ragnarok. However, it generates a great deal more heat, making it a good choice for advanced players for to make short work of their opposition.
To easily avoid a PPC projectile when playing on X-box Live, choose a mech that has jump jets. While the enemy is charging up their PPC, activate your jump jets. Once they fire, release the jump jets and the PPC will fly over you as you fall to the ground. This can be very effective against Mad Cats.
When playing as the Atlas in the lava area, at the end near the party, do not go into the area from the cave too far. It will activate several Mechs including an Atlas or two. Instead, destroy the helicopters with ease, then start destroying everything around that gets targeted. Eventually, you will find two Atlases in the back left corner. You will know that you are targeting them because it takes a lot to destroy them. Note: You should not be able to see them. Inch forward from the opening and you should be fine. You will face two mechs, a Madcat and a Belial. Also, the Atlases will not attack you in retaliation.
At the beginning of the level where you must kill the WOB's second in command, stay on the ledge. Do not fall or you will be slaughtered. Kill the stray Mech that is not one of the objectives. Next, walk further down the ledge until you reach a bridge. Use your radar to see when the objective Mech catapults are under the bridge, then blast the bridge. It should kill most of the Mechs. Then just finish off the survivors.
Before you destroy the ship that the leader tries to escape in, go to the back and destroy the bridge and tunnel. If you do not do this, a lot of reinforcements will come through the tunnel after you destroy the ship. To kill Ragnarok easily, shoot him until he gets by a barrel that explodes, then destroy the barrel. It weakens him a lot.
Go to a bridge that tanks cross. Fire at the tanks and kill destroy them. Next, shoot down the bridge. When you look back at the bridge, you will see the tanks' remains floating in mid-air.
Successfully complete the game to unlock the Nemesis body.
Successfully complete single player campaign mode to unlock the Evil Boss body.
Go to Team Last Man Standing (TLMS). Set the mission to Rush Hour, and before entering a Mech, look at the names. Find the Mech named Ragnarok. This mech has a cannon that will fire three very strong rockets that can cause massive destruction. This seems to be the only level where you can play as Ragnarok. Note: You must have two players to do this.
Play as Blood Asp, Nova Cat, Ragnarok, or Ymir in multi-player mode
Blood Asp
Nova Cat
Ragnarok
Star Adder
Ymir
To do the special, you must have all upgrades for your Mech. When this is done, a message about maximum power will appear. This special can kill most Mechs in one hit. However, you can only use this special once before you lose all of your power-ups and overheat all the way. Note: You can use this special as many times as desired in the level, as long you get all of the power-ups.
Have thirteen people in a room at a time
Set the public and private numbers at 11 and 1, then invite someone. Once that person comes in, change the public number of people to 12. It will now show that you can have thirteen people in the room. Note: This may sometimes glitch the game.
Jump jet and land on Skull Bot's eye lasers. After you have cracked his head open like an egg, you can manage to surf towards him. You will take damage, but this will get you into a good location to hack.
First, keep hitting it in the head with your lasers. A VTOL will constantly drop supplies if you happen to be hit by the Skull Mech's weapons. When you get the top layer off, Nurohack the Mech, then fire mortar rounds into its head. Watch out for its pulse lasers from long range and Napalm Cannon from short range.
Use your pulse lasers on the coverings on its legs when it gets close, and use your missiles when it jumps back. When it charges at you, just run backwards; if you run to the side it will knock you over with its front claws and hit you with the plasma cannon when you are down. Keep blasting at its legs and picking up Natalia's salvage and you should kill it without trouble.
Destruct-O-Match 1
Type "boohooiwanttheoldgameback" at Mode select screen on Destruct-O-Match 2 to get the old game back
Carnival of Terror
To get more time type in "custard" during the game.
Frumball
Type "kougra" while playing Frumball to skip the level, although your points will get reset.
Type "frumball" to get an extra life.
Meerca Chase 2
Type "superextrahypergravitymode" in meerca chase 2 to get a new mode. Thanks logical_monkey
Snowmuncher
If you type "buuuurrrrrrrrp" while playing Snowmuncher, the bloat-percentage of your belly decreases by 50%.
Sutek's Tomb
Type "plzsutekcanihavemoretime" to receive a 30 second time bonus in Sutek's Tomb.
Whack-A-Staff Member
To get a bigger mallet type in "a5paragu5"
Korbat's Lab
Type "spiderbite" to an get and extra life.
Hasee Bounce
Type "doughnutfruit" to reset the timer (once per game)
Dubloon Disaster
Type "scallywags" while playing the game to create a whirlpool. You can only do this once.
Meepit VS Feepit
Let the opponet beat u atleast two times but u must beat the opponet twice and the third time make its health go really low before you let it defeat u twice. Doing that will make u get more points. plz email me if u dont understand this:)
Ice Cream Machine
Type "strawberryvanillachocolate" at any time to get an extra life. Thanks Peridot Lemons for the tip!!