Torch Gatling: Fires a rapid barrage of flaming shots from his gun that ignite hit enemies.
Volcano Breath: Breathes fire in front of him to damage and burn enemies. Usually does that when enemies reach too close to him.
Big Shot: Charges up a slow-moving but powerful shot that explodes to inflict splash damage and residual burn damage.
Fire Storm: Fires an airstike of fireballs out of his head, which rain down on enemies. Rounds from this attack explode and inflict fire damage. Usually does that when enemies have a higher ground.
Giga Bash: Punches the area in front of him, dealing damage and knocking enemies back. Usually does that when enemies reach too close to him.
Berzerk(Conjectural): When he is at low health, Giga Torchwood may turn his flames blue, similar to Torchwood's Plant Food effect. This greatly boosts the damage of all of his abilities and adds "Berzerk" in front of their names (excluding Giga Bash). This effect lasts for about 60 seconds and also boosts up Giga Torchwood's mobility around.
Like Giga Gargantuar, he can do both melee and ranged damage, being a threat in all forms of combat. If you are attacking him as a team, have 1 or 2 people distract the Giga-Torchwood, then have 2-3 people attack him. Beware his Big Shots and Firestorm Strike, which fire from ranges farther than his Torch Gatling. If possible, hide behind cover and poke your head out to occasionally attack. Zombies like Foot Soldier or any Sniper are great against this boss since you can get to spots where you can chip off its health.