If I may recommend it, I use Hide My Ass VPN (HMA! Pro VPN). It's pretty amazing and the yearly plan (annual payment) is only $78.66. That might sound expensive, but that's only $6.55 each month. You get 678 VPN servers in 91 different countries. This includes multiples servers in Brazil. They also offer a 30-day money back guarantee. So if you buy it and decide within 30 days that it sucks for playing Combat Arms on, you can cancel your account and get a refund. I highly doubt you'd want a refund though. The connections are extremely fast by default, but https://wiki.hidemyass.com/Speed provides an indepth look at how you can speed up the VPN even more.