How do you think F2P survive? They have to have something to sell to people. EME been pretty good on not placing P2W items on there CS. Now some items you may say are P2W on TERA but EME finds other ways on adding to game so players can get the items
League of legends is an example of a good F2P game, you cant pay to win but if you pay you can get the chapions faster or you could buy skins, its not pay to win so its awsome.
I tried this today, its a decent Co-Op tower defense FPS. The only gripe I have with it so far is that each match I was in lagged considerably. I played 2 games though and it was okay.
I found it to be entertaining. Might be a bit of a money grab, but it's still enjoyable. My one gripe is that I've always despised the GoW-esq controls, even on console controllers.