Hidden goof rewards
Some of the game’s secrets shown in the achievements list are actually goof rewards. These vary from Loss Streaks to Rank Demoting.
Easy wins with Jann Lee
First, try to land a critical punch or kick to the enemy’s head. If not accomplished, make use of quick countering or blocking to land a firm blow. Then when your enemy is hit off balance for a few seconds, keep throwing random critical blows to the head region mainly, and mix it up slightly to the body and legs. If you can do this and include fast combos in between your rhythm, you should be able to keep the enemy off the ground desperate for making successful blows. You should be able to do this technique with simple combos. Make sure that your rhythm is broken, meaning attack at different times without staying in a similar pattern and keeping your blows mostly critical. If you can do this a lot, you should also be able to switch it up with fast combos making it almost impossible for your opponent to counter. Remember to execute critical blows to the head mainly, mixed with fast combos and quick blows to the body. Keep your rhythm broken so it is impossible to counter (no repetition or repeating the speed of blows), and make sure to keep your guard up. Do not allow the enemy to hit you unexpectedly, or they may confuse you with the same trick. Try to at least counter when you lose balance in the match.
Select Spartan-458 and play on the Gambler’s Paradise stage. During the match, a Warthog with Marines will appear on the road.
Biolab Core stage
Successfully complete Story mode to unlock the Biolab Core stage.
Nassau Station stage
Successfully complete Story mode with Helena to unlock a stage similar to the first stage of Halo 2, the Hangar Area.
Tatami Mat stage
Unlock all costumes and system voices and successfully complete Story mode with all seventeen characters to unlock the Tatami Mat stage, which has a floor mat with no walls.
Successfully complete Story mode with any character to unlock Theater mode and their movie. More movies can be unlocked by completing Story mode with different characters.