I cleared just about everything up to ver 388 or the nipple sex with the inn keeper. The only things I haven't done are the inn special topless event because I didn't feel it was worth my time, Eric training with Jania (tbh I find it odd given how much powerful Eric is to Janica) I think since the Bandit groups and first fat goblin was the only encounters that could beat me though I did find out that its possible to beat her on the first try if not hard to do, and some of the dungeons because I don't want to shuffle with the rng system until I'm forced to go to x one for a future quest. I honestly hate that the dungeons at first are just rng and as I can tell it doesn't even have an anti-repeater system for dungeons you already visit so you can fully use the selector without save scumming to get them all. Anyways, from what I seen the game doesn't really have a main quest line, as it does have unfinished quests but the pattern seems to be that they are self contained and never lead to something grander or interconnected, hell given the base plot you could say that most of the game takes place in an epilogue longer than what can be found in a Fire Emblem game.
