It's a solid game. I didn't think much of it at the begining but then the next day I found myself playing the whole afternoon till late at night without realising the passage of time. Yes, the character movement is heavier and slower than in most games, but it's not a bad thing, it's just diferent and once you get used to it it's pretty fun to figure out diferent attack combos of diferent weapons. Finding secrets is also very engaging and they're usually not easy to spot. Definitely worth buying especially when on sale.
I haven't finished the game yet, but it's a really nice stealth game. Old school in a sense that it doesn't point you directly to the objectives, but rather gives you hints via the dialogs and you have to figure out yourself how to get to various places. I also like how the areas are interconnected, with many hidden passages and shortcuts, making exploration fun and engaging. If you like old school stealth games like the original "Thief" series then I totally recommend trying this game out.