To get unfrozen talisman in Tribes of Midgard, you will need to find unfrozen enemies in the Glacier Peaks biome and kill them.
Upon death, these enemy types will drop the unfroze talisman on death, and so you will want to farm them for that reason alone. But the Glacier Peaks is a tricky biome to get into early on, the main reason it's cold as hell, and so you will die quickly from frost damage.
To get around frost damage, you'll need to look towards better armor with decent cold protection. Personally, we recommend farming to make one of the top-tier armors, as just one piece or two of the Fronjot or several of Utgards armor sets will protect you from the cold.
However, you can also go with the bandaid fix for the cold, and that would be making one of the cold-resistant potions. To craft one of these potions, you'll need red meat and mushroom oil - past that, add vines to the mix for the highest-tier potion.
You will also need to upgrade the trapper at least twice to unlock both the first and second variants of the cold-resistant potions. Then when you got the potions after the upgrade for the trapper, they should be enough to get you through the biome. However, you will still need to raise your power level to 200+
The reason is that the snow region is one of the deadliest in the game, and so you will need to raise your power level by leveling up and upgrading, and getting better gear.
Check out some more Tribes of Midgard guides at Pro Game Guides!