The Archon Gland in "Mortal Shell 2" is a crucial special material that increases the maximum number of health flasks you can carry. To collect all Archon Glands, you can search for them one by one. The first Archon Gland is located at Widow's Cliff, and you need to defeat the Flesh Arbiter first.
How to Obtain the Archon Gland in Mortal Shell 2
1. Widow's Cliff -- Archon Gland