Armor Lock Glitch + Solution:

At the main menu go to forge world
(Note: This only works with two or more players)
Select forge world as the map and select Start
Now while in Forge world 'Spawn' in as many 'Armor Lock' abilities as you need now get the other players to use them
(Note: Leave one extra one or the glitch will not work)
Now go into edit mode and select the spare 'Armor Lock' and select the delete all option this will give everyone with the ability unlimited armor lock making them immune to bullets and other things
SOLUTION:
When everyone is in permanent armor lock you can still kill them by spawning a kill ball on them or assasinating them they are the only two counters to this glitch.