To easily avoid a PPC projectile when playing on Xbox 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.
Listen To Your Surveillance Team
These guys have the skinny not only on the mission objectives, but places to hit for bonuses and places to outright avoid.
Watch Your Ammo Supply
Yeah, those short-range missiles are pretty impressive, but save them for larger targets. You've got a really limited supply. The best plan is minimum firepower for maximum result.
Dodge, Cover And Run
Don't walk into the line of fire, I learned the hard way. Use buildings and other structures for cover as often as possible. When you see those guided missiles heading your way, run like hell, and as erratically as possible. Sometimes you can shake them off and save yourself a world of hurt.
Smash Those Buildings
Inside many key structures you'll find health packs and other goodies. This can mean the difference between a critical failure and mission success. Also, many of the buildings are spawn points for tanks and other nasties. Destroy the buildings and you'll have fewer opponents to worry about.
Keep Cool
Heat is a factor that must be monitored. Certain weapons generate heat as you fire them, so once your weapon overheats it won't function anymore, which takes you right out of the battle. So you can use natural settings to get rid of heat, like jumping into a river.
Fit The 'Mech To The Mission
Prior to each mission you can configure your 'Mech's weapons through a wide variety of options. But the really cool feature is the ability to do mid-mission weapon upgrades. Remember those smashed buildings? If you find a weapons facility building, bust it open. Inside will be bonuses such as a brand new Heavy Gauss rifle that can be installed right there.
Suicide
When you play the game on Xbox Live, choose Host Game or Optimatch, then play "Last Man Standing". When you die, you will become a human. Click the Right Analog-stick and you will commit suicide.
Tag enemies with flares
This trick requires you to be in a Mech that has a flare launcher. Get right up to an enemy mech (touching it), then launch a flare. It should stick to them. Any missiles fired from any enemy tank or Mech will hit the one "tagged." This also works on tanks, but they are smaller and faster.
Easy stats on Xbox Live
Two controllers are required for this trick. Sign into your Xbox Live account from the Mech Assault menu. When you are ready to play, create a match of your choosing (Destruction, Team Destruction, Capture The Flag, etc.), but set the number of people in the game to two. You can do this cheat by yourself. When you are in the team selection, mech selection, and skin selection room, make sure that if it is a team game that you are a different color from your guest (controller two). If its a game like Destruction, then choose a big Mech with lots of powerful firepower and have your guest control a weak Mech (like elemental). If it is a game like Capture The Flag, then choose a fast Mech and any desired Mech for the guest. Start the game and you can score points easily without worrying about being killed. Your stats will increase at the stats menu.
Cloaking Tips
To walk in the water without kicking up water behind you, simply cloak (turn invisible) while you are in the water and wait until you are completely invisible. Then you can not be seen while walking in the water.
You should entreat to walk while cloaked anyway, since running will cause your mech to appear in a faint outline.
Ragnarok For Multiplayer
To unlock the ultimate Ragnarok mech for online/multiplayer, simply beat the single player Campaign mode. The Ymir variant will also be unlocked.
Wall Walk
To walk up the side of most steep hills, face the desired hill directly. Begin to move forward full speed and as you are about to slide back down, turn quickly to the left or right, then quickly back forward. This can be repeated but takes a little practice. Very helpful in multiplayer CTF for those runners without jump jets.