look gameloft. I've been playing this game on my tablet since I was 8. and now I'm 15. and until now I couldn't finish it because of the weapon upgrades that cost a lot of dog tags and take a lot of time. I hope you guys please fix the time issue because it shouldn't take an hour to upgrade fire rate on a assault weapon. that's why I gave it a 4 star rating. but this game will always have place in my heart. keep the good work gameloft !