Dragon Quest VI: Realms of Revelation/Gallows Moor

VS. Gallows Giant
This is actually a really easy fight, thanks in no small part to the Giant's unusually weak AoE attack, a magic neutralizer that can't actually do anything to stop the Sword of Ramias, and a critical hit that can always be blocked by Carver and neutralized by the Ghent Staff, Sage's Stone, and Hustle Dance.

So just have Lizzie alternate between Focus Strength + Attack/Defend/Ghent Staff (as needed), have Carver alternate between Knuckle Sandwich and Forbearance, have Terry spam Sage's Stone (switching armours as needed), and have Rex Oomph Carver before using Dance/Attack/Defend as appropriate.

Gallows Moor


The mini-boss may be defeated, but this place is far from over. Go down the stairs at point A, across the electric floor, and talk to the NPC to get the Guards' Garb. Put that on by using it from the item menu, loot the treasures you come across, go up to the 1st floor, talk to the guard between points F and H, talk to the Captain guarding Blackmar at point P, loot the three treasure chests on the 1st floor, then talk to the woman running the bar where you get the Baby Escapee Dreamscape. Go talk to everyone you are told to talk to, and the guards will eventually try to execute someone!

This triggers a forced battle, but there's nothing you can do to win. The Prison Guards are easy enough to beat, but Zozagel and Dogmus are unbeatable encounters. Dogmus has 7000 HP, and will always paralyze your entire party on the 6th turn, even if you happen to have Kaclang up on that turn. And even if you do somehow kill him before the 6th Turn, the game will just ignore your victory. You will be thrown in your cell, and the game will go on as if you lost.

Waking Up
Observe the fallen guard once you wake up in your cell; the townsfolk will begin their riot and free you from your prison. On your way to the 1st floor, Erdrick will give you 4x Seeds of Strength! Use these on Carver, give your Staff of Antimagic to Lizzie (buy it from Swanstone or Sorceria if you don't have it), and have your party look like this:

Zozagel is collapsed right outside Blackmar's throne room. He's immune to Sap, but relies on single-target physical attacks in a way that makes him even less of a threat than Terry; so feel free to beat him up if you like. Whatever you do, get your gear in order and take on Blackmar!

VS. Blackmar
Blackmar starts off with two Dragooners on his side, who each have 336-420 HP. In addition to that, he attacks twice per round, makes frequent use of AoE's, likes to use Kasap, and will also revive both of his minions to 100% HP if given the chance. Given all these factors, he can be a huge step up in difficulty if one is not adequately prepared.

Fortunately, he has a critical vulnerability to Fizzle. Land that on him with Lizzie, and there will be nothing he can do to stop you from spamming Kabuff and killing his minions. And once you do that, and land two Saps on him, the match is basically over. So the trick is surviving the first few rounds.

But, that shouldn't be too hard either. The Sage's Stone does more than it's fair share of healing with Terry using it, and his armour switching allows him to adjust to the situation however he needs to. So just have Terry spam the Sage's Stone, have Lizzie (or someone else) seal Blackmar's magic with the Staff of Anti-Magic, have Carver (or someone else) max out the party's Resilience with Kabuff, and have Rex use Oomph and Sap as needed (if you didn't need to replace him with a Kabuff user). Once your party is set up, you can just have Carver Focus Strength + Double-Edged Slash spam Blackmar into oblivion as Lizzie and Rex pitch in their respective attacks.

Aftermath
Go down the stairs at point A to talk to Benjamin again. The next cutscene will trigger, and you will wake up the next day with a new mission. Go talk to Benjamin once again, and he will give you the Orb of Truth. Leave Gallows Moor, try to purchase the Yggdrasil Leaves you need if you haven't already, and head to the Prison of Sorrow.