So, you’ve chosen one of the more arguably difficult plans in Chapter 15: Roland’s. His plan is to sneak into the castle undetected and defeat the Aesfrosti commanders before they can escape. But you get found out, and nowThalasandErikaare after your head. Here’s how to say goodbye…to the Aesfrost twins, that is.

The difficulty of this battle is determined by one thing: did you buyOil Jugsfrom a merchant in any of the previous chapters? Because if you have, then you’re in luck. You can deal extra damage to Thalas’ soldiers by throwing oil onto the bridges and lighting them onfireusing a fire pellet or Frederica’s spells. Enemies will have no choice but to pass through them, after all.

Image via Square Enix

But here’s the fun part: enemieswon’tpass through them if they’re on fire and the exit isblockedby an immovable tank, likeEradorandJulio,with four TPsstacked. By blocking off the onslaught of enemy units from Thalas’ side, you may focus on Erika and her goons.

Related:How to level up fast in Triangle Strategy

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Butif you don’t have oil—that’s perfectly fine! You can use the same strategy above, though your tanks might need adefense bufftogether withcontinuous heals. This block strategy will also not last long without oil, since Thalas has hawk knights who can just jump over. You have to defeat Erika’s goons (or at least most of them) before you’re overwhelmed.

Alternatively, just block one bridge using Erador and make himprovokehawk knights and archers. This way, enemies can only approach you from one side of the ship.

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How to beat Thalas and Erika

First things’ first:leave Thalas and Erika alone. Kill everything else first (especially those nasty mages), since they’re faster and deal more damage. In fact, as long as you stay out of Thalas’ range, he won’t cast any spells. Erika throws oil every three or so turns and sets it on fire. But as long as one of her allies is on them, she won’t. And if you’re alone on the oil puddle, just move away.

Next: remember to use theFleet-footedQuietus on yourfirst turn. Erika will automatically enter in turn two, but Fleet-footed will allow you to set things up before she arrives. This includes blocking the ship’s bridges and getting units on both sides close to her location.

you may also useJensandRudolphto help you settrapsearly on. However, note that you can’t set traps on an occupied tile.

Then, just quickly kill the enemies! Use magic on the knights and physical attacks on the mages. Take advantage of units such asBenedictandMedicawho can grant allies another turn.Annacan be placed on the opposite side of an ally unit for two follow-up attacks.

For more help withTriangle Strategy, take a look at some of the other articles here at Pro Game Guides.