As probably everyone else (seeing how this game is present in pretty much every sale), I got this for less than a dollar and my expectations were extremely low. I finally got around to playing the game after about 2 years it has been in my library and I have to say, I somewhat enjoyed my playthrough.
Using the abilities of your dwarves correctly was a lot of fun. You eventually get 3 dwarves. One is a ranged guy with good damage and support for the other 2 dwarves. Second is a melee guy that likes to rage, deal lot of damage and control enemies and 3rd is a stealth guy, able to teleport between hiding spots, stealth killing and the usual "stealthy stuff". Because you have 3 characters, there is a tactical pause during which you can aim/issue commands.
Normal combat is what I liked the most. You mainly play a positioning/aggro management game. Using your abilities to the best effect, controlling enemies, blowing them up with area of effect abilities or picking the off one by one with a sniper bow. Your choice. But there are several forced stealth sections in the game which can get somewhat annoying. Many of which are instant failure if you get detected and require you to perfectly execute your actions, like timing your kills or killing 2 targets within an extremely tight time window.
You find runes for upgrading the abilities of your dwarves throughout the game. These are pretty crucial because in the later stages of the game, it would be impossibly hard without some upgrades of abilities (especially the stealth guy). There are even some secrets that require a specific ability from the tree.
To sum it up, wait for any sale (this game is for -95% pretty much all the time) and then it's well worth the dollar. It should be noted though, that the game is unfinished and ends after 2 chapters with a cliffhanger. It will probably never get finished so keep that in mind. With all that said, I'm giving this a 6/10. Frankly, I have played much worse games than this.