ANTI FALTERED TITAN

Death doesnt faze the souless. If the Titan is killed by cold damage, he regains 80 hp and will attempt to flee.

The Cold isn't the only thing that freezes. When entering a fight with this titan, all party members must roll a 15 CON save. On fail the targets become frightened by the creature.

HOT HOT HOT! The titan is hot to the touch, if someone touches a part of it, they take 1d4 fire damage.

Immutable Form:  The Titans form cannot be altered by magic.

Arm Cannon. Ranged Weapon Attack: +5 to hit, range 120 ft., 1 target. Hit: 22 (4d10 + 2) force damage.

Swing! The titan rolls two attack dice and attempts to hit with both hands. First hand (the normal one) is +2 to hit, range 10 ft, 1 target, Hit: 13 (2d8) bludgeoning damage. Second hand (the one with the arm cannon) is +5 to hit, range 12 ft, 1 target, hit 20 (4d10)

The titan uses a legendary action randomly at the end of someone ELSES action.

BLARING LIGHTS, NOISE! (Costs 2 Actions). Everyone in a 30 ft sphere will be forced to roll a 10 CON save, if failed, roll a second 15 CON save. if the first fails, they take 3d5 psychic damage and halucinate things that make them feel... something. if the second one fails, they begin to have a seizure and become prone.

Arm Cannon (Costs 1 Action). The titan makes an Arm Cannon Attack.

Towering Defense. If the Titan notices that he is nearing death (this is up to GM) any time he takes damage that would reduce him to 45 hit points or lower, it can reduce the damage he takes to 1, and it regens 2 hp. Either a combined attack or a large blast would be needed to finish it off.