Arknights Endfield Aurylene Fragment – How To Obtain And Use The Worn Key Card

The Arknights Endfield Worn Key Card is an item that unlocks a secret Aburrey Valley location. This abandoned spot hides an Aurylene Fragment.

Let’s see what you must do to get the Worn Key Card and where you can use it to access a secret Valley IV area!

Arknights Endfield Worn Key Card Guide

To complete the Worn Key Card mini-puzzle and collect the Aurylene, you first need to obtain the key and then figure out which door it unlocks.

How to Get the Worn Key Card

Progress through the main quest and unlock the Aburrey Quarry area in Valley IV. Go to the Staff Lounge, where you will find Lonnard, the shop owner.

Interact with Lonnard and agree to take a look at what he has for sale. Among various other items, Lonnard sells a Worn Key Card for 100 Stock Bills.

The Arknights Endfield Worn Key Card is a unique item. You can purchase it only once. Now that you’ve got the key, it’s time to find and unlock the abandoned area mentioned in the description.

Where to Use the Worn Key in Aburrey Quarry

The Worn Key Card description provides no clues on the location of the abandoned area. Luckily, you don’t need to travel too far to reach it. The secret area is also in the Aburrey Quarry.

Follow the ramp up, turn right, and notice the crate. Jump on the crate and you will reach the terminal where you can use the card to unlock the Aburrey Valley secret location.

Enter the abandoned storage, jump on the crates, and then drop down to enter the second room.

Collect the rewards from the desk and head up the stairs to get the Arknights Endfield Aurylene Fragment.

Check out more Arknights Endfield guides!

Arknights Endfield Recover Lost HP – How to Heal

Arknights Endfield Sandleaf – How To Farm Sandleaf Powder