Recommended specs for a gaming laptop ? ( With budget )

I'm getting a laptop, but I'm asked for specs and a lot of specific stuff about it. I don't know anything about computers and their specs, so I'm wondering if anyone can suggest any good specs for one. I want it to be a gaming laptop that can run almost everything alright ( Bf4 and all those fancy are out of this case, but I don't mind being able to run them ). I'm available to spend 1,500$ .

And please no "Get computer, not laptop", because it's not possible in this case.