My Halo Campaign finished

(tags game, Xbox 360, FPS)

I don't know exacly how long it took me, but after two days of owning the Xbox 360 I finished the Halo 3 Campaign mode on Heroic difficulty. Legendary will probably make me cry. :-p

I got 530 gamer points for finishing. This gamer score is a new thing to me, but I like its simplicity. How do I unlock the rest?

The action is great, the weapons are killer, the vehicles, sweet. I like sci-fi action, not killing nazis or zombies (uh the Flood?). At least the map-backtracking is kept to a minimum here. As far as the story goes, all in all I was disappointed, but how else can you end it? Also I wished I heard this game in English because I like the voice actors, but I'm not going to spend more money on it right now.

I'll write my spoiler thoughts below before taking a new challenge: Xbox Live (online), with no mic because I use headphones for my primary audio.

SPOILERS in ROT13

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Gur ynggre yriryf ner svyyrq jvgu gur Sybbq. V ungr gur Sybbq. V jnaan fubbg ng zber Pbiranag. Gur jnl gurve oyhr be benatr oybbq cnvagf gur jnyyf naq ebpxf vf... jryy vgf tebgrfdhr. :-) Sybbq orpbzrf crn terra juvpu whfg qvfthfgvat. Qba'g trg zr fgnegrq ba gur betnavp ybbx ynlre "Pbegnan" znc. Lhpx.

V rkcrpgrq gur ynfg npgvba frdhrapr bs gur tnzr gb or gvzrq, whfg yvxr Unyb 1. V nyfb rkcrpgrq gb pbageby gur Nevovgre ng fbzr cbvagf. Univat gur Neovgre jvgu zr erzvaqrq zr bs gur pb-bc pnzcnvta cynl, juvpu vf fjrrg pbaprcg. V qba'g rkcrpg gb cnegvpvcngr va bar tnzr gubhtu.

SPOILERS END