: The following parts can be found or unlocked by performing the actions below. You may need a higher loyalty rating if some parts do not appear.
| CAL-44-EAS (arms) | Play story mode |
| CAW-DC-03 (weapon arms) | Beat rank A-1 in arena |
| CAW-DS604 (*PSP exclusive* back unit) | Play Story Mode |
| CBT-FLEET (booster) | Found in mission Destroy Massive MT / Behind a hill in the northwest corner |
| CEBT-HEX (extension) | Beat Safeguard Alloy Sample without losing the transport |
| CEEC-01-XSP2 (extension) | Beat Eradicate Life Forms without breaking the gas canisters |
| CHD-04-YIV (head) | Found in Defend Naire Bridge / below the beginning point on a platform under the bridge |
| CHD-GLITCH (*PSP exclusive* head) | Beat rank E-33 in arena |
| CLL-EM-070 (*PSP exclusive* legs) | Beat rank C-10 in arena |
| CLR-00-MAK (legs) | Beat rank A-3 in arena |
| CWC-SLU-64 (back unit) | Beat rank B-7 in arena |
| CWGG-GR-12 (right arm weapon) | Beat rank C-15 in arena |
| CWGG-HG-10 (*PSP exclusive* right arm weapon) | Found in Defend Helicopter Crew / Atop a pipeline to the northeast |
| CWM-S60-10 (back unit) | Awarded after first arena victory |
| CWX-LIX-10 (back unit) | Play Story Mode |
| CWX-LIX-10 (legs) | Play Story Mode |
| KES-ES/MIRROR (left arm shield) | Activate the bonus mission in Defend Water Processors to activate the bonus mission, then beat it |
| KWB-MARS (right arm weapon) | Found on a beam under the beginning platform in Destroy Massive Weapon |
| KWG-HZL30 (left arm weapon) | Found in Destroy Naire Bridge / Destroy the monorails and complete the mission |
| KWM-AD-50 (back unit) | Don't get hit by a missile in MT Training Exercise |
| KWX-OC-22 (back unit) | Destroy all enemies in Destroy Germ Canisters and complete the mission |
| MAL-303S (*PSP exclusive* arms) | Beat rank D-5 in arena |
| MCM-MX/002 (core) | Play Story Mode |
| MEBT-OX/MB (extension) | Found in Rescue the Survey Team / Hidden in a nook in the wall to the left of the closed door |
| MEST-MX/CROW (extension) | Found in Disable Pulse Generators / Behind a breakable grate above one of the generators on the lower level |
| MGP-VE905 (generator) | Beat rank D-15 in arena |
| MHD-RE/H10 (*PSP exclusive* head) | Found in Destroy Escaping MT / Outside the door where the real mission target appears |
| MLB-MOONLIGHT (left arm weapon) | Beat Destroy Massive MT without a consort |
| MLB-T/100 (*PSP exclusive* left arm weapon) | Found in Assault Crest Facility / On top of the last generator |
| MLH-MX/VOLAR (legs) | Get a good score in AC Test 1 (around 35-40 targets without missing) |
| MLR-MM/PETAL (legs) | Play Story Mode |
| MLR-ZMX (*PSP exclusive* legs) | Beat rank B-2 in arena |
| MRL-SS/SPHERE (back unit) | Found in Protect Crest Convoy / Behind a radar dish to the left of the ravine near the start |
| MWC-XP02/75 (*PSP exclusive* back unit) | Found in Defend Energy Reactor, it is on the floor in one of the right-side hiding spots on the way to the reactor |
| MWG-HG/111 (*PSP exclusive* right arm weapon) | Found in Bomb Disarmament / At the bottom of the molten pit in Bomb Disarmament |
| MWG-KARASAWA (right arm weapon) | Destroy the cannons as quickly as possible in Destroy Gun Emplacements to activate a bonus mission. Beat the bonus mission to get the part |
| MWG-SBZ/24 (right arm weapon) | Found in Recover Ship Cargo / At the bottom level of the ship |
| MWG-XCB/75 (right arm weapon) | Destroy the enemy AC in Defend Ruglen Laboratory and complete the level |
| MWGG-XCG/20 (right arm weapon) | Play Story Mode |
| MWI-DD/20 (inside part) | Found in Defend Water Processors / On the ground behind the pipes to the right of the mission start |
| MWR-M/45 (back unit) | It's behind an outcropping at the top of the dam in Safeguard Water Supply. |
| MWX-MX/STRING (back unit) | Beat the game |
| OP-E-LAI (optional part) | Beat rank C-5 in arena |
| OP-E-LAP (optional part) | Play Story Mode |
| OP-INTENSIFY (optional part) | Beat the game |
| RIX-CR5000 (*PSP exclusive* radiator) | Found in Eliminate Infiltrators / Open door to Floor 6F, it is along the far wall |
| RMR-ICICLE (radiator) | Found in Defend Personnel Convoy / Don't lose a single ally vehicle |
| VREX-WS-1 (FCS) | Beat rank D-10 in arena |
