Be warned though, May's server slam weekend has a level 20 cap and isn't running quite as long as past weekends. Make sure to spend time working on that main quest and stop to participate in open world events. You shouldn't struggle too hard to hit level 20 though, based on my experience in the March beta.

For the full briefing on where and when to fight Ashava, check our Diablo 4 Ashava World Boss spawn times and location guide. Take her out, and you'll get to ride around with one of her gnarly fangs hanging from your horse as bragging rights. To secure it, you'll need to track down and defeat Ashava, the first world boss encounter in Diablo 4. The mount trophy, meanwhile, is the new offering exclusive to May's server slam playtest.

The other title and back cosmetic are both handed out once you reach at least level 20 on one character. You'll reach it at around level 5 during the story quest Rite of Passage, after you've left the first small town, Nevesk. The 'Initial Casualty' title is the first one you'll earn by reaching the town Kyovashad.

The titles and back-mounted baby wolf bjorn were the rewards offered during Diablo 4's March beta weekends-obviously, the wolf carrier was the main carrot on a stick.

Diablo 4 beta forums