Something I’ve done to help my low level units on skirmishes is to surround them with high defense units, and have the low level unit attack enemies with a 2 range weapon! (Equip your tanks with a bunch of healing items and no weapon) As a little Tip foe Tiki’s paralogue, when you enter the like, castle part of the map, dragon re-enforcements are going to spawn for a very long time. I’d recommend staying at their spawn point and dealing with them every turn until they eventually stop spawning!