You need to be Rank 8 to unlock Hero Characters.
If not unlocked use this code in extras - cheat code: pa1ntth3townr3d.
To select Baron Samedi manage loadouts choose a loadout scroll down to Classic Conflict Character scroll down again 6 spaces to Baron Samedi.
Game Mode: Classic Confict.
You need to be hit a few times without dying not to be killed out right, you can die straight after being hit just keep running around being hit/shot/killed it will pop in that game.
Please leave positive votes thanks!!!