3-7 (Samille, El Jackson, and the power of friendship)
I have tier 4 classes now, but decide not to make use of them for this battle. I'm not exactly sure how to work them into my upcoming strategies, besides Debilitator for bosses and Emulator for... well, a bunch of things. Doubt I'll use Nightstalker much, its advantages aren't generally relevant on this challenge, and High Cavalier... we'll see.
Clarissa: Enigmancer; DS/SS OC, Elem/DS EQ, Widespread
Elayne: Gadgeteer; Enig/SS OC, Elem EQ, IFF, Mag+25%
Vin: Strider; Fant/Grap OC, Sec EQ, Weapon Block, Atk+25%
Elemental resists everywhere here, hence the lack of Elementalist OC. Also, the enemies have various high-level skills like Reflect and Retaliation. The enemies fight in pairs and like to boost each other with Zone Effect, but it's not really a big deal, and it's mostly a matter of blowing them up in the usual fashion and watching out for the various defensive skills the enemies employ. I do fail to take my own advice and eat my own reflected Sacrifice at one point, yay 330+ damage! But besides that it's not too hard a battle. Mesmerise and Prevent both see some use at containing certain enemies.
3-8 (evil royal knights)
The coolest thing about this battle is that there's a generic royal knight named Kahn who has 1500 VP (this is insane, might even be game-best), more HP than the boss, and manly sentinel skills. Clearly a reference to the BoF4 guy.
Clarissa: Enigmancer; Elem/SS OC, Elem EQ, Widespread, Crisis Rfx Up
Elayne: Gadgeteer; Enig/Elem OC, Elem EQ, IFF, Mag+25%
Vin: Strider; Fant/Grap OC, Sec EQ, Weapon Block, Atk+25%
I have rather little to say about the battle itself. It's mostly teaching you to watch enemy skillsets, since the royal knights actually play like various common classes (Sacred Slayer, Elementalist, Secutor, Sentinel) but if you don't watch for which is which you'll be in trouble. Esperanza, the boss, deserves note because he has a pretty solid set of boss immunities and non-fail HP, but offensively he's just another Sentinel. Highlights of this battle include tossing enemies off the bridge and then drop kicking them.
3-9 (Nightstalker status whoring) (2 resets)
Clarissa: Emulator; Elem/SS OC, Elem EQ, Widespread, Crisis Rfx Up
Levin: Emulator; Elem/SS OC, Elem EQ, Widespread
Alexia: Sacred Slayer; RF/Stri OC, RF EQ, Leader's Duty, Strong Heart
This battle totally came out of nowhere and kicked my ass. Easily the best fight in Chapter 3 so far.
First of all, I decided I badly want to take certain emulator skills out of this battle, namely sleep, petrify, and misery. Not only are these good statuses to have in general, two of them totally hose some upcoming bosses who might otherwise be quite dangerous. I opt to use Levin because Execrate is that darn good for said spells. Levin has poor offensive stats which has made me generally shy away from him this playthrough, but good speed and MP and those are the only stats needed to statuswhore effectively.
Anyway, deciding to get those is a mixed blessing for the battle itself. On the one hand, Emulator is a great class; MP Regen and Conserve MP combine for someone who can use powerful skills for a long battle, and Exploit Weakness is a huge damage boost against anything with a weakness (i.e. everything in this battle, for starters). On the other hand, it means I can't kill all the Nightstalkers as fast as I'd like. There are five, each armed with a different status spell. Initially I figure I'll grab poison and disease too, but after it becomes clear how challenging this battle will be, I give that idea the finger. Neither status is particularly useful anyway.
My first reset comes brutally and quickly. The Nightstalkers start in status whoring range, and petrify/sleep/misery are all pretty much fatal. I scramble to keep up and repair what they do but it's hopeless and after a drawn-out fight in which the outcome is never in doubt, I die.
So I come back with Alexia in my party, as a Sacred Slayer, for one reason and one reason only, and that is to open the battle with Widespread Status Lock. Things go better this time but eventually I'm overwhelmed by NIGHTSTALKER PHYSICAL BLITZ once they're out of MP. They're just faster than I am (they're fast even for nightstalkers), and their defence-ignoring physicals wear me down eventually. Once again, not a swift defeat by any means, but a defeat it is.
In the winning run I'm more aggressive, quickly killing off the two Nightstalkers I deem expendable (Exploit Weakness hype goes here), and also make use of Mesmerise to control the surviving ones. It's not really perfect because Alexia can't re-Status Lock herself after 3 turns, and Mesmerise wears off fairly quickly due to nightstalker speed, but it gets the job done. It's quite a grind and people definitely die. In fact, I'm fairly convinced I'm going to have a reset here as at one point Levin is all alone against two nightstalkers and at critical HP, I gamble and have him put both to sleep. (I'd already tried this once and missed). 50% odds, but both hit, and I'm able to regroup and revive. To my great fortune, one of the two never even wakes up. I get all the status spells downloaded, and kill the last two nightstalkers. Battle over!
Or not. Apparently there are still 7 royal knights to kill. They're pretty similar to the last battle, only I have more offence due to Emulator and my shinty new status spell options (Petrify sees some use). However, I am -badly- worn down and out of revival, and the Sacred Slayers are supercharged by their dead buddies. I lose Levin during the fight against Esperanza and his Sacred Slayer buddy, and have to be careful about overwhelming the healing. Fortunately I'm able to do that, then finally proceed over and finish off the last three.
EDIT: Oh yeah, I realise that I probably could have had both Execrate and Widespread by now on Levin if I'd played my cards right, and goodness knows that would have helped a lot. Oh well, having to be in Martial Mage for Execrate is an acceptable cost.
Next up is Asgard and oh shit he has a lot of HP. Time to exploit boss status weaknesses~