I'm only updating this thread because the original download link did not work and I'm just talking about a few tweaks to the gamemode.
-Changed Grunt starting weapons to normal plasma pistol
-Decreased Grunt damage and slightly decreased health and shields
-Decreased Elite health and damage
-Gave marines an extra grenade
-Increased marine health and decreased damage
-Increased infected respawn from 5 seconds to 10 seconds
-Extended the hallway the marines spawn in.
-Fixed lighting bugs
Unfortunately with the escape pod door there is nothing I can do about it until 343 fixes welding. I'll be doing more tweaks to the map and the gamemode but for now this is just a hot fix pretty much.