Achievements (Halo 3)

There are 49 achievements worth a total of 1000 Gamerscore. Some achievements unlock certain armor permutations. Achieving all of the achievements will unlock the katana.

Trivia

 * "Marathon Man" refers to Bungie's Marathon series, where interactive computer terminals were plentiful.
 * The name of the "Askar" achievement is actually in Bahasa Melayu (the formal language in Malaysia) and the meaning is "soldier".
 * "Askar" is similar to the Turkish word "asker," also meaning soldier.
 * In Swahili (the official language of Kenya and Tanzania), the word "askari" can mean soldier or policeman.
 * In Pashto/Pashtu/Pushtu/Pakhto (representative of dialectal differences in pronunciation) Asgar can mean soldier, or more generally a member of any armed force. (Pashto is one of two official languages of Afghanistan [along with Dari/Afghan Farsi], and is also spoken in the tribal region of Northern Pakistan.)
 * In Arabic, the word Askar (beginning with the Arabic letter ع ), also means soldier.