What your favorite Halo 3 multiplayer map? Mine’s Guardian. Just saying.
Valhalla
Sandtrap for CTF
Guardian for Slayer
Can’t say. I haven’t played on all of them.
I have the damn Mythic disc, and all that comes up is Heretic, Guardian, Citadel, and an occasional Sandtrap… 
Foundary. I miss that map
Sandtrap.
Ghost Town and of course Guardian
The Pit and Heretic.
Heretic, easily.
snowbound, heritic, and valhalla =^_^=
Valhalla and Guardian.
Guardian. GUARDIAN. G U A R D I A N.
343i! MORE GUARDIAN HALO 4. Or at least a map close to it’s roots. Frantic for SWAT and fun for snipers, KOTH if great here to 
I know i’ts favourite here but… I love them all except epitah(?).
The Pit, Guardian, Valhalla and Construct.
All incredible maps.
Edit: Completely forgot about Avalanche, probably my second favourite map.
Valhalla, Heretic, and Avalanche.
MLG :
Amplified
Narrows
The Pit
Non-Mlg
Heretic
Orbital
Assemlby
Valhalla and Avalanche.
Avalanche, ghost town, and blackout.
Was never a big fan of heretic. Mainly because its not the best map for swat (where I see this map the most).
Narrows for team snipers especially :3
Hate guardian. It’s over rated and over played. The very map is fun but not after playing it a thousand times.
Please don’t reimagine guardian 343 
Standoff All Day
> Valhalla