Well Kyle recently told me about a map called mudslide skirmish for Halo Custom Edition. I downloaded it and gave it a shot...it was the hardest shit I have ever played in my life, I recommend you all to try the map even if you don't like Halo it's set like GOW's Horde mode...I've never survived all the waves...
Keep in mind this is my first picture and video tutorial

MAP DOWNLOAD
http://hce.halomaps.org/index.cfm?fid=4903Here's a picture tut on how to load the map.
Step One...Where to put the fileVery simple really, just go to the download link open it up, and click "Download" on the page. Save it so "C:\Program Files\Microsoft Games\Halo Custom Edition\maps"
Step Two...Enable ConsoleNavigate to your Halo Custom Edition folder...C:\Program Files\Microsoft Games\Halo Custom Edition
and create a shortcut of haloce.exe

Go to Proporties...then add these command in the "Target" line -console

Step Three...Loading the MapThe console work like most fps games...that key next to your number 1 key with the symbols `and ~. Anyways fire up your shortcut that you made of haloce.exe and wait for the game to start up...
When you press the console you should get this pink command prompt...

now type in this command to load this SPECIFIC map, map_name mud_skirmish

The game should freeze/load for a second and then you should have the map up and running!
Loading...
PLAY!
VIDEO TUTORIAL AND GAMEPLAY!!
http://www.youtube.com/watch?v=hwzKAnjuWOA