Book of Weapons

The Book of Weapons is a lore book that can be used to track weapon/tool unlocks and weapon mastery progress. The book is separated into six categories: Rifles, Pistols, Shotguns, Melee Weapons, Crossbows, and Gear.

Base weaponry must be used in order to unlock the weapon variants and custom ammo in each tree. To unlock a variant later in the list, you must first unlock the previous base weapon or variant. For example, to unlock the Lebel 1886 Marksman, you first have to unlock the base Lebel by reaching rank 52, then the Incendiary Ammo and the Lebel Talon. In this case, you need 3250XP in total (750XP + 1000XP + 1500XP) with any Lebel variant to unlock the Lebel Marksman. After a weapon is unlocked, gaining experience with it will make progress toward its weapon mastery. Blood Bonds can be claimed from the book when mastery is achieved.

Besides explosives, light items, and melee, tools are unlocked based on uses. For example, to unlock the flash bomb, you must use any 'Tactical Gadgets' item 15 times after unlocking concertina trip mines at Rank 40. Equipping said trip mines will supply the player with two trip mines, each of which counts as one use when placed. Any trip mine that is resupplied at toolboxes or by looting dead bodies can be placed for an additional use.

After unlocking a weapon, ammunition type, or tool, any further experience gained during the match will apply to the next unlock. Interacting with a blueprint unlocks the next item in the weapon or tool tree of the item in the hunter's hands. Any previous progress toward that unlock is not carried over to the next unlockable item. After prestiging, the unlock conditions for all weapons and tools are reset, but all Mastery progress is saved.