Unlike the editor who chose this game, I definitely wouldn't call it stealth. There's a single straightforward path to complete a level and you kill anyone who gets in your way. An ambush feature doesn't magically change it into a stealth game. In levels you can collect tokens to use at a gear vending machine IF you pay for the premium version of the game. If you play for free those tokens are worthless but still a major part of each level as a constant reminder that there's gear you can't have.