It's too bad about that one absolutely ridiculous score on metacritic, a 50.
This is a fantastic game and should be averaging in the 86-91 range, IMO.
Yeah, looking at their metacritic profile was a bit weird, they have a lot of games that they've rated at least 15-20 points under the metacritic average. It's like they're using a different grading scale than everyone else.
Other games "Thunderbolt" rated 15 points or more below the average: Trine 2, SWKotOR2, Football Manager 2013, Dear Esther (40/100!), Elven Legacy (40/100!), GTA, Battlefield 3, Just Cause, etc.
Hopefully as other reviews come in it'll balance out... always sucks to have 10 great reviews and then one guy who doesn't get it lower the average over 10 points.