It’s been almost three weeks since Pokémon Go came out, and it already has people talking.

It is an incredibly immersive game that blends a virtual world with reality with one goal – to catch them all. And it seems that one man has finally managed to do so. New York resident Nick Johnson recently became the first person to announce to have caught all 142 Pokémon in Pokémon Go. His journey spanned two weeks and involved catching 4,269 Pokémon, hatching 303 and walking 95 miles across New York.

It’s a dream he’s had ever since he was a kid, and now he’s the first person to boast a collection of 142 Pokémon. “I’m an avid Pokémon fan. I played a lot as a kid,” said Johnson. “But it wasn’t until I caught 135 Pokémon that I thought I should go for this, and see if I could be the first to catch all of them.”

“You want to catch ’em all and become a Pokémon master, the childhood dream, but it never really occurred to me I might be the first one to do it until I got pretty close,” he said. What’s even more impressive is the fact that he managed to catch them all, while holding a job and maintaining a social life. How did he accomplish this feat in such a short time, you might ask? Well, he had to sacrifice sleep, and lots of it.

He was moonlighting as a Pokémon hunter when most people were asleep. The hardest Pokémon he’s ever had to catch was a Porygon by the waters in Jersey City. “It popped up on my radar, so I ordered an Uber and had the guy drive me around until I found it,” he wrote in a Reddit comment. However, he managed to catch most of his Pokémon in Brooklyn and Manhattan and because of his job, he’s had to go out on the hunt mostly at night.

“Sometimes they got pretty lengthy into the wee hours of the morning,” he said. “Fortunately I tend to function well on short sleep over a short period of time. And with a little black tea.” Even his girlfriend supported his obsession, but not because she enjoyed time alone while he was out catching Pokémon. It was because he agreed to catch Pokémon for her as well. “I was double-fisting two phones while I was playing,” he laughed.

This is not the end of his journey, however, because there are 151 available Pokémon worldwide, most of which are exclusively available in regions on different continents. He says that in the future he might go on a world Pokémon hunt, but not before he gets some sleep. “I’m looking to see if I can find a travel company to partner with me or sponsor me,” he said. “But now I’m taking a little rest, and catching up on my sleep.”