Ok, you're both right - there's no character portrait icon for the "below half hp buff", and the only place where it's noted is in the predictions.
Anyway, I just did Warlord Silver and... It wasn't really much harder than Hex ruins. Come to think of it, I found it easier. To do the Unlikely Heroes: Swamp in there I had to locker the Viper Ward and prep it every time, which is simply not the case here. The goat revenants go down to PISSORF and don't poison you, so I managed it almost faithless (I did grab Consensus + Potion XP pact for the boss fight). Prepping the thieves subdungeon is also the optimal move (2 revenants fewer, more blackspace), and I went for an Orc to synegrize with the bonus. I also scored a fine sword.
It was tricky in the same way Hex is tricky, but the boss isn't too hard on his own, and you can probably leave a revenant or two alive even (I left 1).
On the other hand, I seem to be some sort of pro (even though a bunch of guys consistently score better on all sort of stuff). Has to be taken into account, I guess.