Viking: Battle for Asgard/Skills

Although Skarin starts the game with all the abilities he needs to complete the tasks he faces, these are fairly limited and will seem very repetitive after fighting for some time. To make up for this, Skarin can learn new abilities at arenas. There is one arena to be found on each island.
 * Niflberg: the arena is found just east of the ruins, on the coast at the very southeast corner of the island. It is available from the very start of the game.
 * Garcliff: the arena is found the mountains above Holdenfort. You cannot reach it until Holdenfort has been conquered by Freya's forces.
 * Isaholm: the arena is found in the mountain above the still. The path to it is along the mountain on the western side of the still.  It's possible to sneak up to it at any time.