The Iron Grip amber sits inside an ornate red chest in the Battlefield region of Valor Mortis, a short run past the second lantern checkpoint. Picking it up early changes how safely you heal, because it removes the main weakness of drinking in a fight. The route runs through trench-lined paths and several patrolling enemies, but none of it requires backtracking or a boss kill.
Quick answer: Rest at the second lantern in the Battlefield, head straight across the plank bridge, clear the watchtower and wagon ambush, then open the red chest by the handcart near the stream to collect the Iron Grip amber.
What the Iron Grip amber does
Iron Grip speeds up the animation of using a Ferrofluid Flask and makes that action impossible to interrupt. In practice, enemy hits that would normally knock you out of a heal no longer cancel it, so you can top up during an exchange instead of waiting for a clean opening. The in-game text states it plainly: “The act of using a Ferrofluid Flask is faster and cannot be interrupted.”
Ambers are passive upgrades that slot into your equipped loadout. Iron Grip has a single rank (Upgrade Level 1 / 1), so there is no higher level to work toward.
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How to equip the Iron Grip amber
Ambers cannot be assigned from the standard inventory screen. You have to equip them at a Lantern. Return to any lantern, choose to rest, and open the amber menu, then assign Iron Grip to a free item slot. The game confirms this in its own tip: “Ambers can significantly increase your abilities. You can equip them by interacting with the Lantern.”
You will know it worked when Iron Grip shows as Equipped in the amber list, and your next Ferrofluid Flask drink plays its faster, uninterruptible animation in combat.

With the amber slotted, healing becomes a reliable tool mid-fight rather than a gamble, which makes the early Battlefield encounters and the tougher fights that follow noticeably more forgiving.






