It's F2P with what I think is a very fair cash shop. It can be a bit grindy at times, but the grindwall has nothing to do with the paywall, since most of the stuff you're grinding for can't really be bought with Platinum. Not that said paywall really exists in the first place...
I remember that game. At first I was confused, but I think I have it coverd Doped surfer dude > Spooky skeletons > Hot read head > Fight stuffs > Buttsecks > PROFIT$$$$$$$$$$$$$$$$$$$$
Because clearly the absurdity of that can be explained by Pretty Marines, or perhaps Chaos Pretty Marines. The Angry Marines hate them for a reason, after all. Also, I'm pretty sure that pic was meant to be satire.
Ey fought et waz funny. N really ey no longah see da appeal o significance ov girly spess marines. Wot would et really change?