It's all good mate, there's nothing wrong with being good at the game ;). You may have played at a time when most were a bit green though, whereas now most players are pretty experienced (I seriously struggle against the experienced ones, but if I find new folk these days, I rip through them pretty easily, which shows a pretty wide spectrum of skill levels playing). But I agree in that the '100 kill' unlocks are the easiest - they only require kills, not wins, and if you look at my time estimates they come in pretty low - if you cut out the lobby wait time (again, I'm guessing this was shorter earlier in the piece), and were a bit over-average, it'd be 3-4 hours of gameplay.