Defender

The Defender is a boss that was added on June 8, 2018.

Design
Defender has an orange triangular base with three Trapper turrets around it and three auto-turrets in each corner of the base.

Technical
Defender has a medium speed and health, as well as decent bullet penetration. Traps have mediocre health, but high damage and speed. Bullets have mediocre penetration and damage, as well as relatively low speed.

Spawning
Defender can spawn on the death of Xyv Wdtcfgzsezgk, or when Triangle Sanctuary dies.

Countering
Defender is one of the weakest bosses, so killing should not be a problem. Bullet spammers with high penetration can kill this boss very easily, as you will just out-gun the Defender and easily penetrate all the traps. If you are a long-range tank, you can also take advantage of low Fov of Defender and attack it from distance, while dodging the bullets from auto-turrets. Director branch tanks can also slowly but steadily deal damage to the Defender and eventually kill it.

If the Defender spawned from the death of Xyv Wdtcfgzsezgk, you should always try to focus on it last. Either eliminate Guardian or Summoner first, and then remaining boss, and only then the Defender. Defender may slow down the process of killing the other bosses, but not much.