AnswerBy completing the various achievements like used car salesman. but the best armor is hayabusa and u get it by collecting all 13 skulls. a good faq for doing so can be found on supercheats.com
For the eod armor: armor-complete tsavo highway ledgendary. shoulders-complete the ark on ledgendary. helmet-complete campain on ledgendary.
For Security helmet and katana: Complete all the original achievements
HINT: The new achievements can help you get katana and security helmet, but not alone, even out the achievement's if u suck at lone wolves then do the new achievements, I got it without doing meta game achievements and only 1 or 2 lone wolves achievements and the rest was new achievements and old!!!
i had like no armour before and then i did campaign on legendary and got all the skulls and terminals, and pow! now u have almost all of the armour!!!!!!!
If you beat the campaign on Legendary you get full EVA, EOD, and some Elite armor. If you get all the skulls you get Hayabusa, but I wouldn't recomend wearing it because almost all the noobs I meet online wear it, and also it is over-used.
I think you get ODST helmate by getting the rank of recruit.
Also for Security Kantana you can also get it by get over 1000 gamer score
Heres a full armor guide for spartan and Elite
- Mark VI: Unlocked by default.
- CQB: Unlocked by default.
- EVA: Complete Campaign on Normal or higher difficulty.
- EOD: Complete Campaign on Legendary difficulty.
- Hayabusa: Collect all 13 different Skulls in Campaign.
- Security: Earn 1000 gamerscore in total from Halo 3 achievements.
- ODST: Complete the Spartan Graduate achievement. (In the new rank progression system) - Reach the rank of Private in any playlist ranking.
- Mark V: Complete the UNSC Spartan achievement. (In the new rank progression system) - Reach the rank of Sergeant in any playlist ranking.
- Rogue: Complete the Spartan Officer achievement. (In the new rank progression system) - Reach the rank of Lieutenant in any playlist ranking.
- Recon: One way is to complete all of the Vidmaster challenges in Halo 3 and Halo 3: ODST. The armor can also be unlocked by achieving something that makes Bungie feel you deserve it, such as a Forge map, film or screenshot or winning against Bungie in a Bungie VS World event.
- Scout: Complete the Used Car Salesman achievement.
Shoulders
- Mark VI: Unlocked by default.
- CQB: Unlocked by default.
- 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 in Campaign.
- Security: Earn 35 Achievements or higher.
- Scout: Complete the Mongoose Mowdown achievement.
Body Armor
- Mark VI: Unlocked by default.
- CQB: Unlocked by default.
- EVA: Complete The Tsavo Highway on Normal difficulty or higher.
- EOD: Complete The Tsavo Highway on Legendary difficulty.
- Hayabusa: Collect at least 5 skulls in Campaign.
- Katana (Add-On): Unlock at least 49 achievements out of 79 and have at least 1000 Gamerscore in Halo 3. NOTE: There are reports from people who get it with less achievements. Since the release of the mythic map pack the Katana seems to unlock for those that download early(without the need for 1000 gamerscore OR 49 achievements)
Elite Helmets
- Combat: Unlocked by default.
- Assault: Unlocked by default.
- Flight: Unlock either Campaign Complete: Heroic or Campaign Complete: Legendary Achievements.
- Ascetic: Unlock the Steppin' Razor achievement.
- Commando: Unlock the Overkill Achievement.
Shoulders
- Combat: Unlocked by default.
- Assault: Unlocked by default.
- Flight: Complete the level The Ark on Heroic or Legendary difficulties.
- Ascetic: Unlock the Overkill achievement.
- Commando: Automatically unlocks for everyone after Title Update 1.[1]
Body Armor
- Combat: Unlocked by default.
- Assault: Unlocked by default.
- Flight: Complete the level Tsavo Highway on Heroic or Legendary difficulties.
- Ascetic: Unlock the Up Close and Personal achievement.
- Commando: Unlock the Triple Kill achievement.
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