Gaining 1000 Paragon levels in Diablo III is no small feat and it's only accomplished by a very few amount of players. But doing it on Hardcore difficulty, where your character's death is permanent, that's some next level insanity. Russian player Nokieka is the first in the world to do it.
According to Battle.net and Diabloprogress, he is currently level 1002 to be exact, followed by a whole bunch of players far behind in levelling. He made it to level 1000 when Diablo III's season 1 ended last week and all the XP gained with a seasonal character got carried over to an already existing non-seasonal one, buffing things up for everyone who played both.
But those are just formalities, and it also means it must have been a bit harder than levelling only a non-seasonal character. He had to start it over and lower Paragon levels mean lower stats.
He mained a Demon Hunter (no surprise there, it's the most popular class) and you can check all his stats, items and skills here. It will probably be a familiar build for veteran players.
Here's a shot. It's from the Russian client but you can still see the "1000" clearly.