I think the reason it got average reviews was because of all the flaws. Some of the criticisms raised against it are:
- The games loading times can be very long at times, and given the amount of transitions you have to make for some quests, this can really spoil the enjoyment.
- The dialogue in English at least is broken in lots of places. People respond to questions in strange ways, sometimes ways that don't even make sense. The translation from Polish to English is terrible.
- Partly due to the dialogue the voice acting is awful in places. The actors were obviously reading out lines without any idea of their context in a script.
- You can tackle quests in a variety of ways, and in a different order but while this is possible, doing so can often break quests, or cause npcs to either fail to appear, or appear in the wrong place. So you still have to do them in a certain order, otherwise the quests break.
- The porn/sex card system, is is misogynistic, and a bit childish. The games attitude to sex and relationships in general is a bit silly at times and really has nothing at all to do with your character, the plot, or anything. It feels like something stuck on at the end to try and cause some controversy and get adolescent boys to buy the game.
The game has lots of good things going for it, but really it is let down by a few flaws which prevent it being a great game. For myself I gave up towards the end of act two. I study English Literature as a subject, the dialogue was the final nail in the coffin for me.