★ Free Flawless Crystal and Legendary Tool
☆ S3 Reloaded New Gun: BAL-27 Best Loadout
★ S3 Reloaded New Dark Aether Easter Egg Keys
☆ Zombies Map | Dark Aether Interactive Map
★ Rarity vs Pack-a-Punch Damage Chart
☆ Camo Tracker | New One Trick Camo
You can get a free Flawless Aetherium Crystal and Legendary Aether Tool by doing the key upgrade activities in Call of Duty Modern Warfare 3 (MW3) Zombies Mode. Read on to learn the steps on how to farm free Flawless Aetherium Crystals and Legendary Aether Tools, and how to complete the upgrade activity!
List of Contents
Go to one of the tiles listed below to start the summon activity. A purple triangle will be on the ground with three symbols around it that you need to shoot. After Shooting the symbols go to a designated spot to form a triangle from the runic writings on the wall.
| Runic Writing Locations | |
|---|---|
 Located on top of the archway on Tile F4. (Location of Science Journal Upgrade) |
|
 Located on top of the bridge-like structure on Tile F5. (Location of Imaginary Friend Drawing Upgrade) |
|
 Head north to top of the building on Tile F4 to start the summon. (Location of Laptop With Stickers Upgrade) |
|
Kill the zombies while you're inside the scorched platform (purple circle) to summon a tanky special zombie.
Killing the special zombie will summon a reward rift that contains either an upgraded version of the purple rarity keys (if you brought them) or a Flawless Aetherium Crystal and Legendary Aether Tool.
Keep in mind that this activity needs to be done in a short amount of time, failing to do so will nullify your progress and you'll have to restart the activity.
Zombies Mode Walkthrough and Guide
| Zombies Season 3 Guides | |
|---|---|
| Giraffe Toy | Imaginary Friend Drawing |
| Science Journal | Laptop With Stickers |
| Rainmaker Fortress Location | Free Flawless Crystal and Legendary Tool |
| Other Zombies Guides and Walkthroughs | |
| How to Play Solo | Zombies Squad Size |
| How to Farm Essence | How to Get Pet Dog |
| Elder Sigils | How to Get Sigils |
| Zombies Motorcycle | Zombies Easter Eggs |
| Death Penalty | Leave Match Penalty |
| How to Revive | Zombies Battle Pass XP |
| Cyphered Tablets | Stronghold Keycards |
| How to Destroy Helicopters | Where to Find Loot Caches |
| Zombies Ending Explained | How to Leave Squad |
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