XCOM 2

XCOM 2

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Deadly Arsenal

Deadly Arsenal

Purchase all of the final tier Hunter Weapons

7.9%

How to unlock the Deadly Arsenal achievement in XCOM 2 - Definitive Guide

Updated for WotC
You're able to purchase final tier hunter weapons once the following criteria have been met.

Either, you haven't enabled the story missions and you can upgrade them as soon as you complete the Archon Autopsy and Elerium Researches. (Archon Autopsy allows the Fusion Axe)

You need the Elerium research for the Powered Shadowkeeper and the Plasma Boltcaster.

You will need a Proving Ground if you have not enabled the DLC or are using the Integrated DLC that is part of War of the chosen to build the initial items.

If you do enable story missions (which I'd personally recommend) the ability to upgrade the weapons DOES NOT appear until you have also completed the 'into the nest' mission. (it will show up as Triangulated Position on your map)
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06 Mar 2017 13:38

2 Comments
What are those final tier hunter weapons?
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By PauloFortes on 17 Oct 2022 09:44
- Powered Shadowkeeper
- Plasma Boltcaster
- Fusion Axe

Tier 2 upgrades aren't needed; you can skip straight to purchasing the Tier 3.
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By Healtti on 05 Dec 2023 18:03

The four DLC weapons are Bolt Caster (assault rifle), Shadowkeeper (pistol), and Hunter's Axe (blade), and Frost Bomb (grenade). You can purchase upgrades in Engineering. You will need to buy the Tier 3 upgrades for all of these weapons (except the Frost Bomb, which cannot be upgraded) to obtain this trophy. The names and cost of these upgrades on Rookie difficulty are listed below (thanks to gh0stface for this info):

 

  1. Plasma Bolt Caster - 125 supplies, 15 alien alloys, 5 Elerium crystals
  2. Powered Shadowkeeper - 100 supplies, 5 alien alloys, 10 Elerium crystals
  3. Fusion Axe - 130 supplies, 10 alien alloys, 5 Elerium crystals
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Need to upgrade: Hunting Axe, Shadow Keeper (sniper pistol) and Arrow Launcher to level 3.
Upgrades to the pistol and arrow thrower are tied to magnetic and beam weapons; the last upgrade to the ax requires unlocking the Archon.
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25 Jan 2024 11:33