|Add Defeated AC Emblems|
Press Select + Start when viewing a defeated AC at the victory screen to add the defeated AC's emblem to your list. If done correctly, you will hear a sound.
Hold L1 + L2 + R1 + R2 + Triangle to drop your R arm weapon, Back Unit, and Inside parts. Hold L1 + L2 + R1 + R2 + L3 to drop Extension parts. Hold L1 + L2 + R1 + R2 + Circle to drop L arm weapons.
|Easy Arena Match Wins|
Go to the "Reservoir" arena level. At the beginning of the match, boost backwards to the point where your AC is almost out of bounds (indicated by the red line on your radar). Most arena opponents will try to get in behind you to attack. Using this trick will cause them to go out of bounds. You may take a little damage, but most fights will be over within ten seconds. Keep in mind that some opponents will not fall for this, but most will. In the "Parking Lot", as soon as the match begins, boost backwards (into the corner). On occasion the enemy will get caught-up on the wall and you will have up to a minute worth of free shots. Since the part of the wall covers the R arm weapon, there are only a couple of Arena opponents that this trick will not work on. Buy and equip the machine gun with 1000 ammo (R arm weapon), and the hovering legs at the end of the list (it is a long shaft). Strafe around your opponent in the arena while firing the machine gun. This trick usually works up until rank A-3.
You can find an extension part in in the Disable Pulse Generators mission.
|First Person View|
Insert a memory card with saved game files from Armored Core 2 or Armored Core 2: Another Age. After saving and resuming in Armored Core 3 from that memory card, pause the game, then press L1 + R2 + X + Square + D-pad to get a first person view of the current screen.
Note: The screen will return to normal when the game is resumed.
There is a hidden head part on the mission "Defend Naire Bridge". Eliminate all enemies on the first half of the bridge. However, before crossing the incomplete part of the bridge, fly underneath the middle section of it towards an alcove. It resembles a road that just stops. Look on the ground of the alcove and you should see a very small circular object. Press Circle to pick it up. It is the hidden AC head part.
|Human Plus Enhancements|
Successfully complete the game and load the clear data. You will receive mail stating that someone wants you to defeat a pilot named "Exile" and that he is very powerful and if you need an edge. Buy the OP-INTENSITY part. It is free, but you need every optional slot open for it. Successfully complete single player mission mode to get the Optional Part (OP-INTENSIFY). Save the game and equip the part.
Note: It will use all slots in the AC. You must then do the following to get the enhancements while that part is equipped. You will receive a mail when each enhancement has been unlocked.
Add Radar Function: Defeat the Arena opponent "Thunder House".
Add Sensor Functions: Defeat the enemy AC in the Eliminate Intruders mission.
Blade Wave: Defeat the target in the Destroy Massive Weapon mission.
Enhanced Booster Performance: Defeat Arena opponent "Ace".
Enhanced Cannon Operation: Defeat the larger of the two targets in the Destroy Massive MT mission.
Enhanced Cooling: Defeat the smaller of the two targets in the Destroy Massive MT mission.
Enhanced Missile Interception: Defeat the enemy AC in the Defend Water Processors mission.
Enhanced Turning Performance: Defeat the enemy AC in the Bomb Disarmament mission.
Improved Targetting Accuracy: Defeat the enemy AC in the Defend Ruglen Laboratory mission.
Increase Blade Range: Defeat the Arena opponent "Exile".
In the last mission where you are told you need to destroy the controller, it is both a very easy and annoying task. After completing the first section, which consists of almost nothing but MTs and laser pillars, all your ammunition and AP are restored -- do not worry about being stingy. In the second part, you will face two ACs at the same time who are a lot tougher than they look. Aside from having to waste a good chunk of ammunition, they will pose little threat to a good Ravin. After this, you will enter a long shaft with MTs and laser pillars that can all get very annoying. Find out were it says target, then slash that seemingly normal yet breakable wall to expose the generator. The rest should be obvious.
|Mid-sized Rocket Launcher|
When the mission where you have to disarm a poison starts, stay on top of the reservoir dam and travel east (to your left) and you will find a back Mid-sized Rocket Launcher.
|Reservoir Mission: Easy Completion|
This trick works against slow/large weapons with low ammunition (Ox, etc). Go over to the dam. Fly up onto the first little door. Land there, then target the opponent and learn how much ammunition they have remaining. Look up and to the left (or right). There should be another door in that direction. Fly to it while zig-zagging to avoid getting hit, and having them waste ammunition. Then, go back down. You are likely to get hit once or twice. Repeat this they are out of ammunition, then kill them. Do not use this trick against machine guns or rifles. It will appear as if the dam is out of area, but it is not.
In the mission where you have to find a sinking ship's cargo, look in one of the cargo rooms on the ship to find a Spread Bazooka.