Wrong, faggot.
>Quest 1: Oni Genji, April 25
The first quest is the first step in the Nexus Challenge. You'll have to play five games of Versus AI, Quick Match, Unranked, or Ranked with friends.
Rewards:
Heroes of the Storm: Oni Genji Spray, Icon, Banner, and Orochi Cycle Mount
Overwatch: Oni Genji Skin, Portrait, and Spray
>Quest 2: Police D.Va, May 2
The second quest features the skin everyone's after - the new Officer D.Va skin. Appropriately, the quests also begin to scale in difficulty starting with the second, as Versus AI matches no longer count towards the quest. You have to play with a friend in Quick Match, Unranked or Ranked.
Rewards:
Heroes of the Storm: Busan Police Hovercycle Mount
Overwatch: Officer D.Va Skin
>Quest 3: Officer D.Va Accessories, May 9
You'll again need to complete five Quick Match, Unranked or Ranked matches with a friend and you'll be rewarded with Officer D.Va accessories in both HotS and Overwatch.
Rewards:
Heroes of the Storm: Overwatch Nexagon Mount, Officer D.Va Banner, Portrait, and Spray
Overwatch: Officer D.Va Spray and Portrait
>Quest 4: Loot boxes, May 16
The last quest again sees you playing 5 matches in Quick Play, Unranked Draft or Ranked and you're finally finished.
Rewards:
10 Overwatch Loot Boxes
10 Heroes of the Storm Loot Chests, 1 rare chest
You can access the Nexus Challenge by heading over to the Blizzard Launcher and clicking on the Heroes of the Storm icon. But if you can't access Heroes at all because you don't have a PC, don't fret - Oni Genji and Officer D.Va will eventually be added to the standard Overwatch loot boxes.