Not worth its full price
And cheap the game should be as it is rather short. It took me just nearly 6 hours to beat it but the average completion time seems to be closer to 4. The length is definitely one of the game's negative sides. Occasionally voice-acting is rather terrible too but it is a minor gripe compared to the often almost nonsensical dialogue.
Characters repeat things multiple times in conversations and replies frequently lack logic. It is like the dialogue was written in parts without knowing the full set. And no one checked how it sounds when everything is said at once. The story also ends up suffering from oddities but it is of little importance in this genre. I did recognize some familiar elements from Venetica, though. For instance, the game takes place in an alternate Europe.
But not all bad either
Despite its short-comings, I found Blood Knights to be quite an enjoyable experience. The combat does not have incredible depth and variation to it but for the game's length what it has was enough. Grouping enemies together to take them out with Jeremy's area of effect melee attacks did not cease to be fun.
In co-op both characters are in action at once, and according to some review they work well together. There is only local co-op, however, and you will need two controllers as the game will not take input from keyboard and mouse if a controller is plugged in. The game also does not allow you to rebind controls even on keyboard.
Visually Blood Knights has much in common with Venetica. It is by no means the greatest looking game but it is pretty enough. Music on the other hand is actually quite good. The orchestral tracks have some great pieces among them, though they are not too memorable. Or maybe the game simply is not long enough to get the music stuck in one's head.