Prebuilt All IN ONE PC? (UNDER RS 90000)?

Guys,
I want to play assassin's creed 4 at 30-60fps at 1920x1080 res. And medium settings (even low is ok!). I also work for making games so i need a good pc for working with unity, adobe photoshop cc!

Mainly i need it to play ac4 and ac3 at 30-60 fps.

is lenovo b350 ok for it?

do tell as i will return the favour.

Added (1). i need an hd monitor and gtx card like 650 if possible.

All-in-One computers are just a laptop computer attached to the back of a monitor.
The Lenvo B350 comes with integrated graphics. You aren't going to play any games very well with that. The graphics are not upgradeable.
"Update: i need an hd monitor and gtx card like 650 if possible. " - where would you put these in an All-In-One?