【CAMPAIGN】Defeat a Malacoda without using a rocket launcher.
The Malacoda is the traditional over the top Resident Evil boss that is far more difficult without using a Rocket Launcher on it. The fight consists of two phases: In phase 1 you'll be on the ground dealing with the mutant whale that's trying to eat your ship, all the while a helicopter will be circling above you dropping ammo (well, he'll be dropping rockets, usually). During the fight you'll notice a countdown, so you will have to do as much damage as possible to the tentacles with the weapons you have available.
To prepare for the fight (WITHOUT using the Rocket Launcher), as your exiting the ship during the count down to self destruct, make sure you equip your best weapons (recommended: python +max damage, g36+2nd highest damage, m3 shotgun +3rd highest damage). Hopefully you have sufficient ammo for these. Once you get to the fight itself, use the g36 first, then mix it up with the shotgun and python. The shotgun is primarily to destroy the ranged attack the boss does, which isn't hard to avoid either way, but it also does good damage when the tentacles come in close. Also, don't forget to scan the tentacles and the handprint behind you during the fight.
The achievement will pop before phase 2 of the fight starts.
Location: Episode 11-1 All you need is a strong sniper rifle with full ammo. To win this boss fight you need to destroy the Malacoda's tentacles. Always attack the dark purple tentacles on the right side. Do not use any of the rocket launchers from the wooden boxes! Stick to your normal weapons and keep shooting the tentacles until the Malacoda dies.