Keeping those two alive is easy... so long until someone kills exploders near them and instantly die by that. Have been trying this few times and one of them almost always dies instantly at some point cause exploders. Saw this first time and i wont shoot those things unless i can shoot them AWAY from them... that other Liz actually ''secretly'' hates her sister that much it seems atleast in my game to always shoot them towards other Liz. Oh well, it would have been a nice weapon for my hardcore run. Cant even kill myself to reset this event. RNG is bs sometimes. Or i am just that bad and this game hates me with passion.