Boon Marrabbio is the most recent secret character introduced into Vampire Survivors, and like the other ones, he's incredibly powerful with the right build. Marrabbio has some weird passive abilities that affect the game's weapons in some interesting ways. This character's weapon speed starts at -110%. This causes Marrabbio's starting weapon, Thousand Edge, to hang in midair rather than shoot forward. This allows the player to build a wall of knives in front of advancing enemy groups.
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Those new to Vampire Survivors might have to wait awhile before they can satisfy the first requirement to unlock Marrabbio. This requirement is to collect 100 floor chickens. This (obviously) doesn't have to be done in one run, but until this requirement is met Marrabbio will remain in the shadows.
Collecting 100 floor chickens is a bit of a guessing game due to Vampire Survivors not keeping track of such things. Once this has been accomplished, the player needs to play the Mad Forest stage.
While in the Mad Forest, the player needs to collect the Pummarola and then Skull O'Maniac pick-up items. It's not necessary to actually use these items. If the player doesn't want to employ them, they can instead Banish the items; picking them up is the necessary part of this step.
Once the player collects the Skull O'Mainiac, they should notice the pies that begin popping up on the ground. These pies heal the character exactly like floor chickens; 30 hit points per pie. As these pies are consumed, more will appear. If the player follows the trail of pies, like Hansel and Gretel following the trail of breadcrumbs, they will eventually encounter a shadowy version of Nesuferit, the boss of the Inlaid
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