Never give up!
My edit of the last post came after your post, but Dylan and Zunde were level 13 entering that fight in my test case, and Dylan did around 750-800 damage per strike with Sword Blessing, Fists of Iron, Descaling Might, and a back attack. Compared to Zunde's 1100-1200 or so.
I'm still not entirely sure we NEED to DA Hydra, or that DAing Hydra will be better for us than one fight elsewhere.
Edit: Also, here's some of my current thoughts on an SS run:
From Lost Forest up to and including the defeat of Primorial Ooze, nothing changes. Don't fight anything on the way back through Lost Forest though, and make sure to get Hildr's Sword on the way out of Dipan.
Kythena doesn't change either.
Serdberg is where the first big change occurs. We will still get Tyrith/Celes, though this time I won't care which one. However, I suggest fighting battles here until Kraad can be released. Don't release Kraad or do these fights until after Wyvern though. Try to get both a Great Eagle Heart and a Thunderbreath Core from a couple of those fights - which may have to be done when Kraad's already ready.
For Wyvern, use Dylan, Arngrim, AND Kraad and go for the transfer kill. With all three I reasonably think transferring in one round of attacks is possible. Also, at some point in Serdberg, go after the Gandeeva - we're going to be using SCs later, so this should help.
Ancient Forest doesn't change - the plan still calls for back attacks and a DA on Griffon.
Audoula shouldn't need to change either.
In Kalstad, buy an Infinity Rod and make sure to pick up whatever Red Body rune equipment can be used by archers. Give that item to Rufus.
At the start of Surt's Volcano Caverns, arrange attacks as follows:
-Aaron: Structural Shot - Smashing Swing
-Dyn: Lower Split - Bloody Crusade
-Zunde: Dreaded Radius - Sweep Dive
Fight in Surt's Volcano Caverns until the appropriate character gets their needed skills, as usual. Fists of Iron is needed regardless, but if that character is not Zunde, make sure they learn Descaling Might as well (neither Aaron nor Dyn can feasibly get Giant Killer before the end of Chapter 3 at earliest, and that's if they can knock loose a Red Holy rune). Make sure to build up Mithra a bit as well.
For Evolver, the party should be the following: Tyrith/Celes (with Hildr's Sword), Sha-Kon/Chrystie (with Gandeeva), Mithra (with Infinity Rod), and Aaron/Dyn/Zunde (with Flamberge - their MAG is so weak the Flamberge's fire element shouldn't heal Evolver much). Use SCs against Evolver, though pump your Heavy Warrior with a Might Potion in the second fight.
Hydra in Crawsus should use the same setup.
In Palace of the Venerated Dragon, I'm picking up the Heavy Warrior. If I wound up with Dyn earlier, I may switch to this other warrior. This is most likely if I landed Gerald for this one - he'll be the strongest of these three by run's end - but all three bear some chance.
I plan on having whatever heavy warrior I ultimately use learn Magician Slayer. If I didn't land Zunde OR Gerald, I'm tempted to also have them learn Unholy Purifier - I can get the Blue Holy rune from a shop somewhere - for this boss. Also against this boss, I will probably stick to SCs and may still use Wrath of Forcefulness - though I'm not restoring that stone regardless. After this dungeon, I pick up the Ourobouros Symbol and get Rufus started on Double Edge (I need a Red Head, Red Body, or Red Leg rune to connect all the required runes for this skill).
That's about where my thoughts on an SS stop right now. Depending on how the Serstine-lock-gun thing works out, I may pick up Sophalla/Arcana in Surt's Volcano Caverns, but I doubt it, as I'd feel the need to grab Mistletein later to make them worth releasing.
I'm still not entirely sure we NEED to DA Hydra, or that DAing Hydra will be better for us than one fight elsewhere.
Edit: Also, here's some of my current thoughts on an SS run:
From Lost Forest up to and including the defeat of Primorial Ooze, nothing changes. Don't fight anything on the way back through Lost Forest though, and make sure to get Hildr's Sword on the way out of Dipan.
Kythena doesn't change either.
Serdberg is where the first big change occurs. We will still get Tyrith/Celes, though this time I won't care which one. However, I suggest fighting battles here until Kraad can be released. Don't release Kraad or do these fights until after Wyvern though. Try to get both a Great Eagle Heart and a Thunderbreath Core from a couple of those fights - which may have to be done when Kraad's already ready.
For Wyvern, use Dylan, Arngrim, AND Kraad and go for the transfer kill. With all three I reasonably think transferring in one round of attacks is possible. Also, at some point in Serdberg, go after the Gandeeva - we're going to be using SCs later, so this should help.
Ancient Forest doesn't change - the plan still calls for back attacks and a DA on Griffon.
Audoula shouldn't need to change either.
In Kalstad, buy an Infinity Rod and make sure to pick up whatever Red Body rune equipment can be used by archers. Give that item to Rufus.
At the start of Surt's Volcano Caverns, arrange attacks as follows:
-Aaron: Structural Shot - Smashing Swing
-Dyn: Lower Split - Bloody Crusade
-Zunde: Dreaded Radius - Sweep Dive
Fight in Surt's Volcano Caverns until the appropriate character gets their needed skills, as usual. Fists of Iron is needed regardless, but if that character is not Zunde, make sure they learn Descaling Might as well (neither Aaron nor Dyn can feasibly get Giant Killer before the end of Chapter 3 at earliest, and that's if they can knock loose a Red Holy rune). Make sure to build up Mithra a bit as well.
For Evolver, the party should be the following: Tyrith/Celes (with Hildr's Sword), Sha-Kon/Chrystie (with Gandeeva), Mithra (with Infinity Rod), and Aaron/Dyn/Zunde (with Flamberge - their MAG is so weak the Flamberge's fire element shouldn't heal Evolver much). Use SCs against Evolver, though pump your Heavy Warrior with a Might Potion in the second fight.
Hydra in Crawsus should use the same setup.
In Palace of the Venerated Dragon, I'm picking up the Heavy Warrior. If I wound up with Dyn earlier, I may switch to this other warrior. This is most likely if I landed Gerald for this one - he'll be the strongest of these three by run's end - but all three bear some chance.
I plan on having whatever heavy warrior I ultimately use learn Magician Slayer. If I didn't land Zunde OR Gerald, I'm tempted to also have them learn Unholy Purifier - I can get the Blue Holy rune from a shop somewhere - for this boss. Also against this boss, I will probably stick to SCs and may still use Wrath of Forcefulness - though I'm not restoring that stone regardless. After this dungeon, I pick up the Ourobouros Symbol and get Rufus started on Double Edge (I need a Red Head, Red Body, or Red Leg rune to connect all the required runes for this skill).
That's about where my thoughts on an SS stop right now. Depending on how the Serstine-lock-gun thing works out, I may pick up Sophalla/Arcana in Surt's Volcano Caverns, but I doubt it, as I'd feel the need to grab Mistletein later to make them worth releasing.