Genshin Impact

This trophy will be unlocked upon completing the In The Mountains side quest that Iris gives you in the Adventurer's Camp near Dragonspine in Mondstadt, which will involve the player having to thaw the crystals in order to restore a mysterious column from the sky known simply as the Skyfrost Nail.

The beginning of this quest will put you to the task of going inside the Dragonspine mountain, where you will see a piece of the Skyfrost Nail on the ground; afterwards, the next step will require you to thaw out the ice three times (one where the Frostbearing Tree is at, one next to the teleporter to the left of Wyrmrest Valley (where you will need to fight against two ruin guards, and then follow the Fire Seelie around and activate the Cryo totems in the order they're going in, which will finally conclude with a fight against a Ruin Grader), and one at the bottom of Starglow Cavern that won't be accessed until you complete a challenge at that same area (which will require you to defeat 14 enemies within 180 seconds in order to remove the barrier around it).

To remove the ice, you will need to destroy a red stone and grab the Scarlet Quartz that will come from each stone. This will not only reduce the Subzero gauge, but it will also grant you the ability to deal damage to the icicle keeping the pieces of the Skyfrost Nail so you will unfreeze them (along with the Frostbearing Tree). Once it has been thawed out, you will need to head up to the top of the mountain (it's recommended to follow the path given to you whenever you select the aforementioned quest from the quest menu, or by pressing to activate the recommended path while the quest is active), where you will need to thaw three more icicles out once you make it to the top of the mountain.

After that's done, you will then need to head to the area where the Peak of Vindagnyr domain is located and open the chest next to the entrance of said domain. Afterwards, head back to the Adventurer's Camp and report to Iris, and not only will you unlock this trophy, but you will also complete the quest and unlock the Skyfrost Nail achievement in-game. You can also unlock an extra achievement by reaching the top of the nail.