can onyone give me a guide to how playing this game with more fps than 2,5 on this Specs :
AMD A6 Quadcore 2.0ghz/Amd R4 Gaphic/2gb ram 1600mhz
buy more ram, 2GB just isn't going to cut it especially since the integrated GPU uses main system ram as well, if you don't you're just going to have horrible performance as there's just not enough system ram to satisfy the OS and the integrated GPU. unfortunately being thats more than likely a laptop adding more ram is about all you can do.
and being that your system is using an A6 (AMD A6-5200 ?) with integrated GPU you're likely never going to get great performance with it even with more ram, but you will see an improvement with more (4GB might not cut it either, but its better than just 2GB).
there is literally no other way to improve performance in this game on your PC other than buying a better PC.