Reason: Unlock all Challenges.
When you kill a person it gives you a lot of XP and you level up quickly
P.S:
There might some challenges that you'll see as not completed, but they are.
When killing an enemy, it "complete" the current challenge so you get the XP and level up
Hope it helped you understand
Another P.S:
Sorry for not updating my Trainer, I have no time to finish it, I've added more options but I can't finish it since I'm very busy :|
EDIT:
Thank you guys for 100th downloads![]()