- Easy Damage Amplification
In the 'Heatray' level in Multiplayer Deathmatch mode, after the Dark Walker drops, destroy it to get a Damage Amplification.

- Play as Alanna (Necris)
At the custom character screen, press Y, then enter 'phayder' as a code to unlock Alanna (Necris).

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

10 Points
Being a Hero	Return 100 Orbs in Warfare matches.
Strongest Link	Get the 'Shaft Master' award in 10 matches.
Shard-o-matic	Get the 'Blue Streak' award in 10 matches.
Hammerhead	Get the 'JackHammer' award in 10 matches.
Brain Surgeon	Get the 'Head Hunter' award in 10 matches.
Delivering the Hurt	Have over 20 minutes of 'UDamage Time'.
Lock and Load	Finish Chapter 1.
Survival of the fittest	Have over 10 minutes of 'Invulnerable Time'.
Seeing Red	Have over 20 minutes of 'Berserk Time'.
Big Game Hunter	Get the 'Big Game Hunter' award in 10 matches.
Goo God	Get the 'Biohazard' award in 10 matches.
Ace	Get the 'Top Gun' award in 20 matches.
Be victorious inning is the only thing	Finish with the highest points in a Ranked match.
Just warming up	Finish playing a 'Versus' Ranked match.
Armadillo	Get the 'Roadkill' award in 10 matches
Never Saw it Coming	Have over 20 minutes of 'Invisibility Time'.
Don't taze me bro!	Get the 'Combo King' award in 10 matches.
Killjoy	End sprees in 20 matches.
Off to a good begin	Get the 'First Blood' award in 40 matches.
Pistolero	Get the 'Gun Slinger' award in 10 matches.
I see how it is	Finish an Instant Action match in every game mode.
I need some backup	Finish 1 mission in co-op.
20 Points
Lets get it on	Finish a multiplayer match in every game type.
Connect the dots	Finish 100 Warfare matches played to at least 3 points.
Flag waver	Finishd 100 CTF matches played to at least 3 captures.
Have a nice day!	Get the 'Rocket Scientist' award in 10 matches and 'Flak Master' award in 10 matches.
Untouchable	Reach 20 kills against a god-like bot in instant action without dying.
Paint the town red	Finish 100 Deathmatch or Duel matches played to at least 20 kills.
Equal opportunity destroyer	Be victorious in a Ranked match in every game type.
Thirty minutes or less	Finish 100 VCTF matches played to at least 3 captures.
Serial killer	Get the 'Killing Spree' award in 20 matches.
Hat trick	Achieve a Hat Trick in 10 CTF or VCTF matches.
Sir Slays a Lot	Get the 'Monster Kill' award in 20 matches.
Spice of life	Play a match with every mutator, using only 1 per match.
Got your back	Finish 10 missions in co-op.
Around the World	Be victorious in a multiplayer match on every map.
30 Points
Not in Kansas any more	Finish Chapter 4.
Bag of bolts	Finish Chapter 3 in Insane.
Open war	Finish Chapter 4 in Insane.
Does not compute	Finish Chapter 3.
Just business	Finish Chapter 2 in Insane.
Soldier's blood	Finish Chapter 2.
40 Points
Like the back of my hand	Acquire every power up on every map.
Thanks to all the little people	Finish a campaign in co-op.
50 Points
Get a life…	Get 200 kills in multiplayer on 50 different days.
Ranked Champion	Be victorious in 500 Ranked matches.
60 Points
Fear the Reaper	Overcome Akasha and complete the campaign in Insane.
I'm not on a holy war	Overcome Akasha and complete the campaign.

- Play as Ariel (Iron Clad)
At the custom character screen, press Y, then enter 'jihan' as a code to unlock Ariel (Iron Clad).

- Bonus characters
Successfully complete the indicated task to unlock the corresponding character:


- Open mic
Use the following trick to talk with your headset more effectively instead of keep pusheding D-pad Right. Keep pushed D-pad Right, unplug your headset, reinsert your headset, then release D-pad Right. If done correctly, the microphone symbol should stay on screen, and you no longer have to keep pushed D-Pad Right to talk.

- Special walls in Deimos map
There are orange and green looking energy/grainy appearing walls that you can walk through as well as shoot through. There are two of these orange walls that are circular in shape at the top of the map that allows you to reach a sniper rifle.