>>25130000By the time Chrom gets Aether he tanks all hits and sucks back his whole lifebar in one move, and his attacks will kill anything. Pretty much nothing will be able to touch him until the EX maps or the end of the game.
Robin bodies everything with magic, because nothing can stand up to it early on, then he can reclass until he becomes a vampire druid with the defense of a knight, with Ignis activating every turn and killing anything that dares touch him.
It's really not that hard.
In fact when you think about how FE is for teens, and Pokemon is for 8 year olds, Awakening's difficulty is pathetic.