Arena Parts:
Win in the arena and get parts. Each time you win a part, you are notified via mail.
Part Name - Part Type - How to Get it
CWM-S60-10 - Back Unit - Win your first victory
MGP-VE905 - Generator - Achieve D ranking
CWGG-GR-12 - Arm Unit Right - Achieve C ranking
CWC-SLU-64 - Back Unit - Achieve B ranking
CLR-00-MAK - Legs - Achieve A ranking
VREX-WS-1 - FCS - Achieve 35th ranking overall
OP-E-LAI - Optional Part - Achieve 15th ranking overall
CAW-DC-03 -Weapon Arms - Defeat Ace, the number one pilot
Parts Found in Missions:
Part Name - Part Type - Mission
CHD-04-YIV - Head Defend - Naire Bridge
MEBT-OX/MB - Extension - Rescue the Survey Team
MWR-M/45 - Back Unit - Safeguard Water Supply
MWG-SBZ/24 - Arm Unit Right - Recover Ship Cargo
MWI-DD/20 - Inside - Defend Water Processors
MEST-MX/CROW - Extension - Disable Pulse Generators
MRL-SS/SPHERE - Back Unit - Protect Crest Convoy
KWB-MARS - Arm Unit Right - Destroy Massive Weapon
CBT-FLEET - Booster - Destroy Massive MT
Parts found by completing specific actions in missions:
Note: You must complete Destroy Gun Emplacements in less than two minutes and collect at least an overall A ranking to reach Distract Union Defenses, where you get the MWG-KARASAWA. Similarly, you must destroy all enemies and have at least an overall B rank when starting the Defend Water Processors to reach Eliminate the Bombers, where you collect the KWS-ES/MIRROR.
Part Name - Part Type - Action
MLH-MX/VOLAR - Legs - Gain a rank of A or higher in AC Test 1.
KWG-HZL30 - Arm Unit Left - Destroy 2 or more monorails in Destroy Naire Bridge.
RMR-ICICLE - Radiator - Keep all convoy units alive in Defend Personal Convoy.
KWM-AD-50 - Back Unit - Don't get hit by a single missile in MT Training Exercise.
MWG-XCB/75 - Arm Unit Right - Defeat enemy AC in Defend Ruglen Laboratory.
CEEC-01-XSP2 - Extension - Beat Eradicate Life Forms without breaking more than 2 cylinders.
CEBT-HEX - Extension - Keep transport vehicle alive in Safeguard Alloy Sample.
KWX-OC-22 - Back Unit - Kill 20 or more enemies in Destroy Germ Canisters.
WMG-KARASAWA - Arm Unit Right - Beat Destroy Gun Emplacements and Distract Union Defenses.
KWS-ES/MIRROR - Arm Unit Left - Beat Defend Water Processors and Eliminate the Bombers.
MCM-MX/002 - Core - Kill enemy AC unit in Defend Energy Reactor.
MLB-MOONLIGHT Arm Unit Left Defeat largest enemy in Destroy Massive MT without using a consort.
MWX-MX/STRING Back Unit Beat the game and save after winning.
OP-INTENSIFY Optional Part Beat the game and save after winning.
Parts gained from corporate points:
Part Name - Part Type - Corporate Points Required
MLL-MX/EDGE - Legs - 6 Mirage points
MWGG-XCG/20 - Arm Unit Right - 9 Mirage points
MLR-MM/PETAL - Legs - 12 Mirage points
CAL-44-EAS - Arms - 8 Crest points
CWX-LIC-10 - Back Unit - 13 Crest points
CLF-D2-ROG - Legs - 17 Crest points
OP-E-LAP - Optional Part - 10 Kisaragi points
Drop parts:
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.
Get Defeated AC Emblems:
View the Arena Menu and select a ranked AC that you have defeated. Once an AC's profile shows up and you see the AC and emblem press Start+Select at the same time. You should hear a noise if you did it correctly and you get the AC's emblem.
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. The screen will return to normal when the game is resumed.