As the description states, ranged weapons are useless here. Field your best freeze resistant melee fighters. If you have Toripons they can be of help because they shoot from the air to the ground so the ceiling doesn't bother them, they are also out of range of the snowball machines. Don't bring a Toripon hero though as the Hero mode is wasted if you are in a tunnel. Back at Patapolis , Meden will say: