The trick with the sword guy is to not jump. The sword hit has a lot of knockback, so you can kite him a bit while the other kobolds beat him up. I like to bop him one before he swings the hammer, back up to avoid it, then move in after he misses and do it again. We actually had to nerf the sword guy a lot because in earlier builds you could literally stand still and trade hits with the paladin and win. Honestly you can still do that because their DPS is pretty high and he gotta hit you 3 times to kill you