Judgement101 said:
It's fun. Lots of action and the upgrade system is really....broken. Seriously, you upgrade the assassin's cloak and it barely does anything.
Uh...upgrading the cloak does exactly what it says it does.
At level 1, cloak takes a little while to activate and doesn't last very long. Bots and turrets can see through it.
At level 2, the activation time is reduced and duration is improved. Bots and turrets can't see through it any more.
At level 3, the activation time is further reduced and duration is significantly improved. The cloak will now slowly regenerate when the Assassin is standing still, and you get a 100% critical chance for one second if you begin firing shurikens while cloaked.
Those aren't just improvements, they're pretty drastic improvements for each level. I don't know how on Earth you came to think that upgrading cloak wasn't helpful.
OT:
I've never had a problem finding a game so far on the PC, it's usually instant. There's definitely an active community, and it's easily worth the price tag.