Man, there's some aspects of 2D combat that's really mmm... traditional?
Like turn order is a lot less opaque because actions all execute during "your turn". Makes you play more defensively since it'll be too late once the turn starts. Also regen abilities don't trigger at the beginning of your turn, they trigger at the end, which made my Wristorive and Belle Caps less useful for dungeon crawling. It's a doozy to get used to. Most vexingly, faster battle animations don't work in 2D mode and encounters are random. I spend like 10-20 MP on Holy Protection in every segment, it feels like it doesn't last very long.
Anyway, what I mean is that it's because of these small battle flow differences that the Tickington boss at Baramos nearly kicked my ass and I was pretty overleveled for everything else in the main game. I was very poorly prepared for what was coming. I busted out Hymns with Serena and used Pep Up powers conservatively and was constantly swapping in and out, which I hadn't been bothering with in regular boss battles. Sylvando died early and Rab and Serena got confused so I thought I was done for. I didn't equip items. Hedrick and Hero had to hold the fort while Jade used a Miracle move to keep her HP up. It was nervewracking. As I type this, I realize I could've saved myself some grief if I attacked Serena out of confusion ack. Even Erik, who I have no experience using for damage with and just rotated in as a spare body, had major contributions when he managed to put the boss to sleep sometimes. I usually performed the turn assuming it wouldn't work though so most turns, I ended up attacking the boss right out of sleep cause Erik's move executes before everyone else's. Alas.
It was a triumph to actually pull it off and not have to worry about my last save since Tickington's autosaves are way less generous than 3D mode, but naaaw, I hate it. I'm a'okay with overleveling.