Who doesn't see the Focus Rifle in Halo: Reach and think “Ghostbusters!”? So, my son and I worked on creating a fun Ghostbusters Firefight mode. You can download it and play it at: http://www.bungie.net/Stats/Reach/FileDetails.aspx?fid=2426974
You play as one of the four Ghostbusters . You're armed with a Proton Pack with Neutrona Wand particle thrower and PKE Meter . You must defend the Ecto Containment Unit from the invading minions of Gozer the Gozerian, who seek to release the spooks, spectres and ghosts within it.
Remember: you're a Ghostbuster in a CWU-27p flight suit, not a Spartan in MJOLNIR armor – and don't cross the streams! It's actually quite a challenging game mode.
Optionally, a player can choose blue team and spawn as a Class 5 free-roaming vapor! You're hard to see , can float , can project a full-torso apparition , and can slime the Ghostbusters . :-O
Give it a try and let me know what you think!