The Sub Zero upgrade can be a real pain for Killjoy and most of the Viktoria crew as well. This gives all your Frozen Hart Minions (Wendigo, Ice Gamins, Silent One) the trigger that can abort its activation after the first swing. Good thing is that those Minions already have the necessary suit, so it will be an automatic thing. Rasputina has this trigger on her card and can get the suit from SS whenever it is needed. The Ice Golem lacks this option but it has Armor +2 which mitigates the damage potential greatly and you can also bring the Armor of December upgrade and use it on the Golem to pump his Armor to +3.