No weapon
From Halopedia, the Halo wiki
File:A spartan with no weapon.jpg
A spartan with no weapon
In forge mode have one person spawn any weapon. Then, have another person pick that weapon up. As soon as they pick up the weapon, the first person has to delete it. The other person should have no weapon. WARNING you can't have a secondary weapon. If you enter a vehicle and get out you will take out your original weapon; if you ever press the Y button you will take out your weapon.