Heroine's Quest
Heroine's Quest: The Herald of Ragnarok is an adventure game/RPG hybrid written by an indie group called Crystal Shard, set in the world of the Poetic Edda and Norse Mythology. It uses Adventure Game Studio and has been published on Valve Steam.
Story
The city of Fornsigtuna is wrapped in an endless winter. Egther, the last of the frost giants on Midgard, is causing this in an effort to start Ragnarok, the end of the world in Norse myth. The jarl of Fornsigtuna has called for a hero to save the city, to which the player character responds. Barely surviving an initial attack by Thrivaldi, Egther's right-hand troll, the heroine travels between Fornsigtuna, the village of Munarvagr, and the otherworldy Svartalfheim. The troll is using strong-arm tactics to try to obtain the eyes of Thiassi, which would allow him to unleash Egther on the world. The heroine first foils these attempts, then has to gain the trust of the villagers to obtain the eyes for herself. Using these, she confronts Thrivaldi and Egther in a showdown at the frost giant's frozen castle of Gastropnir.
References
Review on RockPaperShotgun Review on Gamezebo Review on Mobygames