Cheats for Armored Core 3 for PS2

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.

You have to find all the hidden and preformance parts as well as the OP-INTENSIFY abilities to get 98%. To get 100% you must complete all the missions with a S rating.

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.

Successfully complete the game and load up 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.

In 3rd Layer Industrial Research. Mission, Rescue the Survey Team. You must fond this part. Right before the door that’s opened by a switch on the wall, there is a sewer outlet on the left wall (opposite side of the switch) near the ground that has the part inside.

In 3rd Layer Industrial Research. Mission, Defend Personnel Convoy. You must successfully complete the mission without losing any of the convoy.

3rd Layer Industrial Research. Mission, Destroy Naire Bridge. Destroy two monorails and successfully complete the mission to get part.

In 1st Layer Special Research. Mission Defend Ruglen Laboratory, you must defeat the AC and successfully complete the level.

In first layer special research. Mission, Protect Crest convoy. You must find this part. The part is by a radar dish near a small base South East of your starting location. If you jump to the upper edge and head a bit South East you will see the base.

In first layer natur area. Mission, Recover Ship cargo. You must find the part, You will come to a large room with two doors, one door leads to your mission objective, the other to the part.

In first layer special research. Mission, Destroty germ canisters. You must kill all the MT’s and opposing troops as well as successfully complete the mission.

You can get the OP-INTENSIFY by beating the game in the mission section. In the following I will explain how to get some the abilites for it.

Location: Arena
Challenge: Beat D-1 Thunder House
Reward: Radar Enhacement

Location: Arena
Challenge: Defeat E-32 Exile
Reward: Increased Blade Range

Location: Arena
Challenge: Beat A-1 Ace
Reward: Booster Enhancement

Location: 1st layer nature area
Mission: Defeat massive MT
Challenge: Destroy both parts of the massive MT 
and complete the mission.
Reward: Back Weapon Enhacement (use back weapons 
without kneeling)

Location: 1st Layer Nature Area
Mission: Defeat massive MT
Challenge: complete the mission
Reward: Radiator Enhancement

Location: 1st layer 
Mission: defeat massive weapon (not MT)
Challenge: complete the mission
Reward: Blade Wave (beam upgrade for every blade, 
press O then X to fire wave)

Location: 1st layer nature area
Mission: defend water processors
Challenge: complete the mission
Reward: Enhances Missle Interceptors

Location: 1st layer special reasrch area
Mission: Defend Ruglen Laboratory
Challenge: Defeat enemy AC and successfully 
complete the mission
Reward: Improved Targeting Accuracy

Location: 2nd layer waste desposal
Mission: bomb disarmamednt
Challenge: Defeat enemy AC and successfully 
complete the mission
Reward: Enhanced Turning Performance

Location: 3rd layer district 1
Mission: Eliminate Intruders
Challenge: Defeat enemy AC and successfully 
complete level
Reward: Various Sensor/Radar Functions

If you already have beaten the mission and then get the OP-INTENSIFY then you have that ability, if not then you should get a mail notice when you complete the mission.

In the first layer nature district, mission destroy the massive MT. At the beggining of the mission head to the northwest corner there is a small nook, the part is in the middle of that, it’s a small black object on the ground.

In first layer Nature Area, Mission Defend water processors, You must complete the second half of the mission

In first Layer Special Research, Mission Destroy gun implacements. You must finish the first mission in a SHORT amount of time. Just go for the gun emplacements don’t worry about the camouflaged MT’s. Then you must accept and successfully complete the second part of the mission. A consort can be used, and helps A LOT and you still get the part.

Beating the #1 arena AC isn't easy. I realized an easy trick. In the Ruins stage where you start out, simply jump over the horizonatal laying pillar. After that there should be a corner directly to your right. Back yourself into it and wait for Ace to jump on you, even of he hits you, stay there! Eventually he jumps ontop of your AC and stands and jumps there, Where you can shred him to bits simply by standing there and pointing up. (it may take one or two times, but it works.) You can use this trick to beat a variety of computer AC's. (not all of them though)