Here's a flythrough of the map I created, called Jackhammer, If you want to download the map and the custom gametype, click the link below. The Gametype is a Team Deathmatch game, where its similar to search and destroy on COD, 1 life per round, team with most kills in 5 rounds wins the match.
http://www.bungie.net/stats/reach/fileshare.aspx?player=On%20DeMandrewlet me know what you think, or let me get opinions on changes I should make to improve the map or gametype.