Sacrosanct
Legend
I'm playing a RK right now in RotFM, and yes, it is very good. Having lots of fun. Not so super powerful from damage, but some of the other abilities are really, really good, especially the ability to shift an attack to another target. Last Saturday I turned a critical hit from a big bad to instead hit one its allies. Much to the DM's chagrinSomeone liked my post, so I will necro this tread with an important comment:
I got this late spring to run a game with a level 6 rune knight in it. The player was only able to make 2 sessions, but those 2 sessions convinced me that the RK is really strong. I was thinking too much about the extra damage and the damage resistance rune being pushed to level 7, but it doesn't matter - the runes overall are so good that the nerf was definitely necessary.
So yeah, I was wrong. Playtesting is so important!

That is sweet.
Plus, I've been doing my Nordic accent the whole time, and the first time I used giant size, I described how the air got heavy with electricity, and started playing Immigrant Song for the rest of the players to listen to (I'm playing a goliath RK with a warhammer). It was an epic moment lol.