Challenges: 3; Defeat all the boss trolls and gigantes

There are two Boss Trolls and two Gigantes in chapter 3 of Dragon Quest Builders. This post will tell you how to find and defeat all 4 of these powerful giants. There is one located on each island.

The first Boss Troll is on your starting island. Pass the barricade and continue N and you will definitely see it well before it sees you. It is the giant green monster you likely saw when you were exploring Kol. Place some Magic Cannons and shoot it, and bash it with the Bashmobile. I recommend bringing a party, with top-grade equipment and items. Once defeated, the monster drops Vile Visage x 2.

This Boss Troll is the hardest to find, but the easiest to defeat. It is located on the Island of Lava. Head S through the gates from the teleportal, then cross the lava to a third gate. Head W through the other gate then head N. You will see the Boss Troll behind a gate. Bring a party, then place a Magic Cannon, then blast the gate, then blast the monster, as the troll cannot pass through the small gap that you made. Let your escort melee the troll while you calmly shoot blast after blast of magic cannon fire at the monster. Easy, right? The Boss Troll drops Evil Idol x 2. Now you may waltz into the E treasure room and gather some excellent loot.

The first Gigante is found beyond the Red Teleportal. From the Teleportal, head NW until you find a snowman-like structure. Head N. You will spot the mighty blue giant well before it sees you. Bring as many companions as possible, and blast the monster with Magic Cannons. Also bash the the giant with the Bashmobile. It drops Draconic Column x 2.

The final Gigante and final boss monster is found beyond the Green Teleportal. Head S over the mountain and to the ice field with the igloos. The final boss monster is in the middle of the ice field. You can't miss it.

Blast the monster with Magic Cannons as always, and, as usual, bring a party. Bash the monster with the Bashmobile as always. The Gigante drops a single Dragonlord's Standard. Now you can go save, and go through the portal to complete another challenge.