| Reign of Winter GM2 |
With something like a spear to grab onto, Yagello's climb check DC drops to 15. I'm going to assume Yagello is doing most of the work, so Aishe doesn't need to make a Stength check unless he fails by 5 or more.
The water is only six feet deep, so if Yagello fails his climb check and his subsequent swim check, he can still reach for Aishe's spear, and can come back to the service with a single successful swim check (or a really big jump).
I'll allow Growler to have the equivalent of Cleats. This means the ice is treated as 1.5 squares of movement, compared with 2 squares for everyone else. You don't need to make an acrobatics check to scamper across the ice, unless you're jumping or evading an enemy.