I watched a gameplay video and it seemed already dated before release. Don't really mind graphics being dated, but the camera really sucked and the gameplay looked pretty.. boring and dull? Glad to know you're enjoying it, though.
I'm pleasantly surprised, actually. The game must be a blast to play in co-op, which it is meant to, yet single-player is pretty fun as well. There's only two characters to manage, so unlike Demon Stone, it is still manageable. The game also has excellent art design and great level design... this game has the best use of trap levels since Prince of Persia: Sands of Time. So it's certainly not all hack 'n slash, there are even some stealth parts.
Even the voice-over is pretty good, at least on par with the Witcher (one of the characters even sounds eerily familiar to Geralt).
Then again, I'm a sucker for (quirky) Eastern European developed games, so I may be a tad biased.