Want to unlock and complete Red Dead 2’s Weapon Expert Challenges? This Red Dead Redemption 2 Weapon Expert Challenge Guide will tell you how to unlock the first challenge and how you can complete each subsequent challenge including objectives and rewards.
In order to unlock the Weapon Expert Challenge of the Challenge section in Red Dead 2, you will need to get a knife kill. This does not include throwing knives. You need to use your melee knife and either stealth kill someone or just stab them in the gut. Once you complete your first melee kill with a knife, the Weapon Expert tree becomes available.
Red Dead Redemption 2 Weapon Expert Challenge Guide
Weapons Expert Holster at the Trapper.