I originally wasn't gonna touch this map but after seeing so many people fail over and over again either making it too small or it was just forged bad i had to do it myself, here is the Sanctuary intended for Halo 4 Gameplay... Map Name: Sanctuary Weapons: BR/DMR/Carbine/Sniper/Scattershot/Frags/Plasmas Gametypes: Slayer/CTF ScreenShots:
I think there are too many rocks on the last picture. Someone on this forum started a thread with his own remake of Sanctuary. It's started by a guy named Heroic so you can check that one out and compare your map to it since his is extremely accurate. But this is a good remake nonetheless.