Personally I find the entire archer troop set and all branches to be fairly crap. I stopped using any of them. Armor basically ruins the entire mechanic. Each hit is reduced a lot more by armor than the single larger hits from other classes, and even with armor penetration it just doesn't work well I found. I switched my Marksmen out for some Crimson Riders and that was massively more effective on most maps. Even in situations where the archers do a decent amount of damage, having other class types with them sort of messes with their thing, the archers weaken something then the other troops overkill it and waste a lot of potential damage. I feel like archers would work well in full teams of archers designed for quickly grinding easier/soft maps, but I feel like for progressing or doing difficult content they suck. That might just be me though, maybe other people are finding them more useful.
I was able to do the 25 easter stage today with 4 generals, but otherwise close to that. Level 30-37s, they all had level 12-17 Original Uchigatanas, two of them had level 11-12 Original One-Piece armor, one had a level 11 Original Western, then trash mostly unleveled grey-blue accessories because I haven't found any good ones. The trick I used was abusing Naoe Kagetsuna, a SR with 16% troop regen per turn, I switched her to Personal Guard troops, gave her a 4% regen armor, and she was regenerating like 400 health per turn and only taking like 200 damage per hit in porcupine. So she could perma tank the right column while my other three generals dealt with the two enemies in the middle and left. Took like 10 rounds each battle, but was able to clear it safely 10 times. And got 0 eggs. I don't think I'll hit 750 points in time. >.<
There's a level 30 stage after it, nobody has cleared it yet. I didn't waste the energy to see what was inside.
I feel like the easter event was designed for established players capable of doing the entire run every day, and we got shorted by having it right as the game was launching. I did get 2000 kobans in my easter box today, which was nice, but I promptly wasted it on a 11x plat pull which gave me all dupe garbage.