This is until the rogue who had been using the snow for cover stood up and threw 4 flask of alchmist fire into it as a sneak attack. I'm just sitting there going "wha, buha, DAMN IT!!" At 1d6 per flask, plus 11d6 per flask sneak attack, plus the 50% damange increase for cold sub type, and with the sneak attack damage also being fire, well... this critter that was all set to hand the party their a$$es has 2/3 of its HP disappear in 1 attack.
Problem is you can't sneak attack with splash weapons... was news to me too when I found out in a PFS game after playing a rogue/alchemist build to level 6 and the area venture captain, who was sitting in that game, showed me the entry in the book.
Throw Splash WeaponA splash weapon is a ranged weapon that breaks on impact, splashing or scattering its contents over its target and nearby creatures or objects. To attack with a splash weapon, make a ranged touch attack against the target. Thrown splash weapons require no weapon proficiency, so you don't take the –4 nonproficiency penalty. A hit deals direct hit damage to the target, and splash damage to all creatures within 5 feet of the target. If the target is Large or larger, you choose one of its squares and the splash damage affects creatures within 5 feet of that square. Splash weapons cannot deal precision-based damage (such as sneak attack).