Master Mode Flashpoint Tips: Infinite Army Prototype

Introduction

It always surprises me when I google something that I think should be fairly well known, just because I want to double-check a specific detail for example, and then it turns out there's actually (next to) no content about that thing out there. In this particular case, said "thing" is the bonus boss of master mode Legacy of the Rakata, a flashpoint that has been in the game for about nine years at the time of writing this. So I thought I'd write a quick guide on how to deal with it myself.

I wouldn't say that this is a particularly hard flashpoint boss, but he's not trivially easy either. It's definitely not the type of fight where you can just wing it and hope for the best - you have to understand the boss's abilities and coordinate with the rest of your group.

The boss in a nutshell

He sits inside a small bunker and you'll want to stay inside said bunker for the entire fight, as leaving it while in combat causes annoying womp rat adds to spawn. However, once a minute he also does a massive channelled AoE called Unstable Barrier that is as big as the bunker and that you can't just stand in.

I think the intended way to deal with this was that you would run out during the AoE and deal with womp rats as needed, however I've never actually seen it done this way as it's actually possible to avoid the AoE damage without leaving the building: by breaking line of sight to the boss and hiding behind the vase highlighted in the screenshot below:

What to do as a tank

Make sure you have your back against one of the bunker walls, as the boss frequently does a knockback in a frontal cone and you don't want to go flying out of the building and cause womp rats to spawn unnecessarily. You'll also want to be facing him away from the rest of the group.

Ideally you'll want to have your back against one of the bunker's side walls, so the rest of your party can stand on the other side, and if someone gets aggro, at least they'll only bounce off the wall there and won't be knocked outside either.

When you see the Unstable Barrier cast, run behind the vase to line of sight the boss, then jump back into the fight once the channel is over.

What to do as a damage dealer

Stand behind the boss so you don't get hit by his knockback. Ideally the tank should position the boss in such a way that you'll still be able to have a wall behind you as well, just in case aggro is unstable and the boss twitches. Note that you'll want to stand directly behind the boss even if you're ranged, as standing at a distance will cause him to constantly yank you back into melee range and interrupt your casts.

When you see the Unstable Barrier cast, run behind the vase to line of sight the boss, then jump back into the fight once it the channel over.

What to do as a healer

Stand directly behind the boss with the rest of the damage dealers to avoid both his knockback and his grapple. Focus on healing the tank as the boss hits quite hard, and everyone else should be nicely grouped up for some splash AoE healing. When you see the Unstable Barrier cast, run behind the vase to line of sight the boss, do some more AoE healing there (the rest of the group should have come with you!), then jump back into the fight once the AoE damage is over.

Note for everyone

Hiding behind the vase and actually breaking line of sight with the boss requires a certain amount of precision. Watch your health bar, and if your health keeps ticking down, you're not in quite the right spot yet.

It's also technically possible to just power through the AoE without hiding at all if your healer is sufficiently overgeared and the group has the right damage reduction cooldowns available. A Gunslinger's Diversion and Scrambling Field are hugely powerful in this fight for example and can negate the majority of an Unstable Barrier's damage to the whole group if deployed at the right time. Various personal damage reduction cooldowns also work. However, I would only advise going with this strategy if the healer is comfortable with it and you have a plan for how to negate Unstable Barrier's damage once every minute for the entirety of the fight.