For a free game, you can't really complain.
The highlight of this game is it's level of loadout variety. Unlockables such as the grappling hook and roller skates, in correlation with the inclusion of map interactivity ( trampolines, ramps, air vents) is what gave this game longevity. Gladly, these unlockables are available after only a few matches as you are rewarded with unlock tokens which can be used at your own disposal. Do you choose to be a slow brute that can glide or a character that can swiftly skate around? Or vice versa? Or something in between? These features turn the game from just some other shooter to something a bit more that's worth giving a go.
Of course this variety is futile if the game wasn't balanced and fortunately, the game for the most part is balanced. A weapon here or there maybe be slightly overpowered but that doesn't really detract from the overall experience.
This game isn't ground breaking, nor is it revolutionary, but as a first person shooter it delivers an enjoyable and unique experience.