Aver said:
Even if it somehow inacurate then still around 30% of players dropped the game between end of prologue and Kayran and that is very disturbing.
For most of the games that I have which have Steam achievements, looking at the Global Stats a relatively high percentage started the game and then it drops heavily for each progressive mandatory achievement. For example with Arkham City it says 88% of people got an achievement right near the beginning of the story but only 43% got the achievement for defeating the final boss. Or with Deus Ex: Human Revolution 88% got the achievement for taking down their first enemy (very hard to miss at the beginning of the game), but only 67% defeated the first boss, 54% defeated the second boss, 46% defeated the third boss, and 45% got to the end.
It's true that TW2's numbers are a little lower, but the Steam version had a lot of trouble with patching which could have put people off the game until the patching got sorted out, and I think most of TW2's sales were at retail anyway (whereas Human Revolution requires Steam) so most players aren't even counted in the Steam achievement stats. Also, a lot of people could have started the game after getting it on the Christmas sale and then found out about the Enhanced Edition and decided to wait for the complete game, so it will be interesting to see if the percentages go up once the Enhanced Edition comes out.