I don't see many specs on that case, but it's at least full-ATX. So I'm just going to have to assume any given GPU will fit. I should also note that Far Cry 4 isn't out yet, so no guarantees on what it needs to perform optimally. Edit: I see GTA5 isn't out on PC either.
Does the PSU have to fit in the budget?
The Corsair VS-450 looks like
a fairly good cheap PSU at Rs. 2356.
So if that's part of the budget, the GPU budget is now Rs. 13644. The best card I see in that range is
an R7 265. (There's a 7850, but it's only 1GB.)
If you can stretch your budget a little more, there's
an R9 270X for Rs. 14100. I don't see anything better in the budget range.
One more thing: What's your monitor resolution? There's a slight chance you might want a less powerful card if it's less than 1920x1080.