Upon purchase, you'll receive TWITCH account.
Link it to your game account to claim the following items: 

1. x2 Random Hunter - Lulu / Billy's Quest / Stubborn / Infected / Horse Doctor / Judge's Rock. Will ONLY work if you haven't received/purchased this item yet.
2. x7 Weapons - Swallow's Tail, Storied Past, Alley Cat, Roe Stalker, Seven Sights, Ten Paces, The Marquis
3. x4 Trinkets (Amulet) - Scaled Peak, Gator Eye, Hera's Gift, Moondial
4. x42 Chests - Supply Crates: items are immediately added to your inventory, no need to open the chests. Items that you can randomly get from each of the chests: Rifle, Pistol, Shotgun, Special Weapon, x3 Tools or Consumables, Legendary Hunter Instance, Hunt Dollars.
5. Huff's Kit ("Huff's First Aid Kit" - legendary skin for the first aid kit)

NOTE: 
!!! Claim items promptly post-purchase; they may expire.
!!! Unlink the Twitch account once all items are collected.
!!! Items hidden after 6 months are still claimable.

These items can only be obtained once per account. You will only receive items that you have not received before. To receive items, you must unlink the old twitch from your game account. To 100% get one of the hunters (Lulu/Billy) to your account, you must activate the issued accounts sequentially, without breaking the sequence or ignoring the instructions. I understand the letters are difficult, but if you want to get 5 hunters, you will have to spend a few minutes.
Please receive items on your Hunt: Showdown account immediately after purchase. Pick up times may be limited.