Bioshock Infinite
When you get your first melee weapon in Bioshock Infinite, the skyhook, you get to learn how to use it pretty much immediately. You’ve just stolen it from a nearby guard who was planning on clawing your face open with it, and you’re kind enough to return the favor. You’re then running for your life, skyhooking guards by the dozen. Of course, since the hook was intended solely for use as a transportation device around the floating city, none of this face-clawing would be covered under the manufacturer’s warranty.