Phantoms is a free-for-all slayer game-variant. In order to win the match, you must get fifteen kills first. All players have never-ending Active Camo; however, map default weapons are still in use. In addition, you must kill them in order or it will not count towards your score.
The Energy Sword, can still lock on; however, it only applies when your target has been damaged or has recently fired his weapon. In both instances, the Active Camo won't be fully active, and the Sword lock works, allowing you to lunge.