The game makes an overall very good impression with good graphics and music. Some level design solutions like pits you can fall into or water which is not traversable are pretty clever, taking into account that the engine is comparable to
Wolfenstein 3-D or
Blake Stone at best. Even though the dungeons aren't very densely populated with monsters compared to other games of first-person action and/or RPG genre of the era, it creates a particular style and atmosphere to the game. There's also some sort of "persistent world" feature, in that unless the current quest objective is completed, returning to a previously visited area of the dungeon will reset all monsters (and, thankfully, items too).
However, there are certain moments in the game that call for criticism. First off, I was very disappointed with the design of the village the player interacts with. All villagers use the same sprite that looks vaguely humanoid (even though some of them have fixed roles like a healer or the village elder who gives quests), and weird yellow blocks that are supposed to represent houses aren't convincing at all. The same level of technology has been used to create very lively towns and villages, as in
Legends of Valour or
The Elder Scrolls Chapter I: Arena. In fact, while the graphics in the game are generally quite good-looking, they are also quite often of a very low resolution, even for the standards of similar games like
Wolfenstein 3-D,
Blake Stone or
Shadow Caster. While this does not actually spoil the playing experience, it suggests that the development was on a rather tight budget.
Another thing to note is that the action part is clearly dominating over the role-playing part. The interaction with NPCs is limited to receiving new quests, and character development consists of obtaining new, more powerful weapons weapons, spells and armour, as well as boosting the player's stats (max health and mana) by finding chests with appropriate potions. Offensive spells basically function as an equivalent of ranged weapons, but there's also the option to use throwing axes which can be picked up after they hit something.
All of that said,
Thor's Hammer is actually a very well done, entertaining fist-person fantasy action game with RPG elements that has both complexity and atmosphere. Worth checking out, especially since there aren't all too many games of such genre from that era.