Overview Of Obelisk map was for any kind of team slayer the weapons are 4 BRs 1 Mular 1 custom powerup 8 plasma grenades 4 frag grenades Map http://www.bungie.net/Online/Halo3UserContentDetails.aspx?h3fileid=75093944 Game Type Bungie.net : Halo 3 File Details
Your screenshots are not embedded because you cannot link them directly to bungie... here is the tutorial to correctly do it... here
You defanately need more screenshots and take them out of first person monitor mode if u need more help feel free to pm me but at least look at the linked thread above first. Also too many nades and too few weapons for a map your size. Add more carbine and maybe a power weapon to promote map controll