Metacritic User Score - reliable?

Nope, watch reviews or gameplay on youtube. Then make your decision.

I generally read reviews. I like reading long reviews, where there specifically point out what they do and do not like (of course, it is entirely subjective and sometimes with fakes inbetween)..but I also love rage reviews for the entertainment value. And I watch gameplay. I don't pay much attention to the scoring, because certain reviews can bring a score up and down drastically.

If you want actual information about the game's quality (instead of looking at a certain number that may or may not be accurate), your best bet is to check a few reviews or so called "first looks" on YouTube from independent gaming channels, such as TotalBiscuit, Angry Joe, Elder-Geek, Northernlion etc. (there's a whole bunch of them, so take your pick). And you should generally avoid reviews from major channels like IGN, GameSpot and such (too biased IMO).

The only review you can trust is yours.

Look at the steam review xD

User scores are only as a quick and dirty gauge of vocal popular opinion, not of game quality. And popular opinion is garbage. Aggregation of data is inherently a destructive process, only leaving the lowest common denominators behind. The average of a thousand data points is astronomically unlikely to actually represent any one of them, least of all your own.