Journey To The Savage Planet: Employee Of The Month (EP)

The easy method from the Xbox One version of the game still works, go to the cave in the Festering Cavern with the alien alloy, the Virulent Tree of K’Klenaii under the large tree. Stand in front of one of the large nuts in there that you use to block the gas vents to unlock the Vaultivore the alloy is in, then just spam to grapple it over and over. This counts as consecutive grapples so no need for any difficult aerobatics