Aliens: Fireteam Elite 2 Achievements Guide

Plan a Clean 30-Achievement Run

Treat the list as five connected workstreams instead of 30 unrelated chores. Campaign clears open the broadest path, while weapon levels, enemy eliminations, attachments, cosmetics, and class missions can progress during those same runs.

1. Clear every named campaign on Casual or higher while changing weapons before one option absorbs all available experience.
2. Complete the four quick loadout and cosmetic requirements as soon as the required items are available.
3. Raise one Kit toward Rank 10, fill its perk board, and unlock the Specialist before scheduling five Specialist mission clears.
4. Run the required Intense, Extreme, and Insane missions deliberately, then verify the no-friendly-fire condition with the whole squad.
5. Use Challenge and Horde sessions to finish enemy, headshot, collection, and remaining weapon progress.

Search Every Achievement and Requirement

Use the directory when an unlock is missing or when you need the exact number, named campaign, mode, class, or equipment condition. Clear the search field and select All categories to restore the complete 30-entry list.

Combine Campaign and Difficulty Goals

The campaign group has six named completion achievements and one all-campaign achievement. A full clear on Casual or higher provides the cleanest base because it satisfies each named story requirement as you reach it and works toward Legionnaire's Service Medal.

For Pure Professionals, squad discipline matters more than raw speed. Establish firing lanes, avoid crossing in front of a teammate who is already shooting, and reserve explosive or flame weapons for angles with clear space. A single clean Intense run can meet the written conditions for both Pure Professionals and Hardened Trooper.

Stack Weapon, Kit, and Collection Progress

Weapon progression has two different shapes. Hell and Back asks for one four-star weapon, while Well Stocked Arsenal asks for ten weapons at two stars. Rotate through ten weapons early, then keep a preferred option equipped until it reaches four stars. This prevents a maxed favorite from absorbing missions that could advance another weapon toward the ten-weapon threshold.

Attachments and Augments support three achievements. Equip any compatible attachment on a sidearm for Not Just For Decoration. For Fully Loaded, choose one weapon and verify every attachment position plus the Augment position is occupied. Collection totals require 50 weapon attachments and 5 Augments, so keep earning new parts even after the equipment achievements unlock.

The Specialist unlock guide explains when to transition from base-class progression to the five Specialist mission clears.

Finish Combat, Challenge, and Horde Cleanup

Do not isolate the large elimination totals during the first campaign pass. Every Xenomorph, Pathogen, Synthetic, Combat Automaton, and headshot earned during campaign or mode-specific work reduces the remaining cleanup.

The counter wording says eliminate or get kills, so build the cleanup around actions credited to your profile. If progress seems slower than expected, stop changing several variables at once. Use one enemy faction, one weapon, and one short session, then check whether the expected achievement progress moved.

Fix an Achievement That Did Not Unlock

When troubleshooting, repeat only the smallest requirement that can prove the issue. Avoid replaying an entire campaign when the missing condition is a loadout action, one Horde checkpoint, or a counter that can be tested in a short encounter.