Early Game Boss Tips: Captain Traunt
The obnoxious Captain "TRAAAAAAUNT!" will be the toughest enemy you've faced yet, so don't get discouraged if it takes multiple tries to take him down. Like the other Maliwan heavy troops you've faced on Athenas, Captain Traunt's weak spot is the elemental canister mounted behind his head.
It can be tempting to run for cover and shoot at Captain Traunt from the temple's upper level, but you'll quickly find it's a deathtrap when Traunt creates a huge ball of fire or ice that circles the edges of the map and can't always be easily dodged. Instead, take the fight to Traunt at ground level, making sure to keep your distance from his flamethrower without straying into the path of the elemental orb.
Traunt is a master of fire and ice, with some elusive elemental attacks that can quickly melt you if you're not careful. When Traunt launches a spiky ice ball into the air, blast it apart quickly before it slows you to a crawl. And when he lobs a pool of molten lava onto the ground, make sure not to stand in the flames while you're firing.