So here is the big deal.
The Red Haven units are alternative Haven upgrades. Although they are named "renegades" they are NOT the renegades storywise (the renegades are the regular Haven units at least as far as I understood the story.)
So here are the alternative Haven upgrades:
Level 1: Brute (Tax Payer; Shield Bash)
Level 2: Crossbowman (Shoots; Rapid Fire)
Level 3: Vindicator (Cleave)
Level 4: Battle Griffin (Large, Flyer, Unlimited Retal, Battle Frenzy)
Level 5: Zealot (Shoots, No Melee Penalty, Caster)
Level 6: Champion (Large, Champion Charge)
Level 7: Fallen Angel (Large; Flyer, Life Drain)
Fallen Angel and Life Drain did it for me.
![wink ;)](/forums/images/smilies/wink.gif)
Rapid Fire isn't explained yet.
Cleave: If this creature’s attack kills at least one creature in the target stack, it performs an additional strike.
Battle Frenzy: Every next retaliation strike performed by this creature inflicts damage 1.5 times as great as the previous one.
Champion Charge: If this creature has walked more than 2 tiles when attacking, it also inflicts half damage on the stack standing in the line of attack immediately behind the primary target.