SPARTAN Armor Permutations
There are a wide variety of SPARTAN II armor permutations, with 11 helmets, 8 shoulder pieces, and 8 chest pieces for a total of 6,144 different SPARTAN armor permutations: one helmet, two shoulder pieces, and chest piece per permutation, with the exception of the Rogue, Mark V, and ODST, which do not have either chest nor shoulder pieces, and Security, which does not have a chest piece.
Helmets
- Mark VI: Starter.
- CQB: Starter.
- EVA: Unlock the Campaign Complete: Normal achievement.
- EOD: Unlock the Campaign Complete: Legendary achievement.
- Hayabusa: Collect all 13 Skulls in Campaign.
- Security: Unlock 1000 gamerscore in Halo 3.
- Scout: Unlock the Used Car Salesman achievement.
- ODST: Unlock the Spartan Graduate achievement.
- Mark V: Unlock the UNSC Spartan achievement.
- Rogue: Unlock the Spartan Officer achievement.
- Recon: Bungie employees, winners of tournaments/double exp weekends, and those that impress (or amuse) Bungie in any other way.
Shoulder Pieces
- Mark VI: Starter.
- CQB: Starter.
- EVA: Complete The Ark in Campaign on Normal or higher difficulty.
- EOD: Complete the level The Ark on Legendary difficulty.
- Hayabusa: Collect at least 9 skulls.
- Security: Earn 750 of 1000 gamerscore on Halo 3. Due to inconsistency, this armor permutation is not always given at 750. There are some reports that the Security Shoulders need a minimum of 500- 995 gamerpoints, even though the official guide to Halo 3 lists the requirements as 750 (could also be total metagame points). Even then, the armor permutation may be unlocked, and then re lock itself after a time, as has been reported.The only way to keep it permanently is to get all the achievements. This permutation may need the player's model to have accessed online to unlock it. Another way to unlock is to gain 30 achievements. For some players it can be unlocked, then lock itself, but to re-unlock you it you need to change to Mark VI then change it back.
- Scout: Unlock the Mongoose Mowdown achievement.
- Recon: Bungie employees, winners of tournaments/double exp weekends, and those that impress (or amuse) Bungie in any other way.
Chest Armor
- Mark VI: Starter.
- CQB: Starter.
- EVA: Unlock the The Road achievement.
- Hayabusa: Collect 5 skulls in campaign.
- Katana (Add-On): Unlock all achievements in Halo 3. (NOTE: The katana is a sword on the back of your armor, and when selected it is the same as having the Hayabusa chest plate. The katana itself is not a chest piece and has no effects on gameplay.) [2]
- EOD: Complete the level Tsavo Highway on Legendary difficulty.
- Scout: Unlock the Too Close to the Sun Achievement, although has been reported that it may appear later sometimes.
- Recon: Bungie employees, winners of tournaments/double exp weekends, and those that impress (or amuse) Bungie in any other way

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