The only reason that one card crushes you is, more likely than not, you've played badly prior to it coming up.
The card where every wounded target is replaced by a new one is PAINFUL. (Reinforcements?, IIRC?)
When your 2 turns away from finishing & the last 5 points of damage needed is suddenly turned into 20+ that hurts, A LOT.
Also the card where you draw 2-3 added cards & apply their affects can royally bone you (Mad Minute).
The Crossfire deck & the Objectives decks could both use a serious look at balancing.
We played again today for 4 straight losses, 3 in the 3rd scene, but 1 in the 2nd scene, because it was just that nasty a combo of cards flipped over.