Resident Evil 4 Remake: Overwrite Terminal puzzle (Incubation Lab) Resident Evil 4 Remake - guide, tips

This guide page explains how to get the Level 3 Keycard in Resident Evil 4 Remake. We describe the puzzle from installing the Biosensor Scope and obtaining the French Wrench in the Incubation Lab from Chapter 13.

Last update: 11 April 2023

During Chapter 13 of RE4 Remake, you may come across an inaccessible Overwrite Terminal in the vicinity of the Incubation Lab area of the Island. On this page of our guide, we show how to successfully complete the associated puzzle in a few steps - installing Biosensor Scope, obtaining the Wrench and creating Level 3 Keycard.

• Reaching the Incubation Lab
• Closed Overwrite Terminal - Wrench required
• Solving the puzzle - getting and using Wrench

Reaching the Incubation Lab

Map link: Level 3 Keycard - Incubation Lab

Incubation Lab is a location which is visited while exploring Island in Chapter 13.

Once you're there, go to the room in the back of the laboratory.

Closed Overwrite Terminal - Wrench required

There you'll find the Overwrite Terminal - you'll need it operational to create a Level 3 Keycard, which is needed for the story to continue.

The terminal is initially locked, and Leon himself will remark that a Wrench will be needed to unlock it.

Solving the puzzle - getting and using Wrench

Start with looking for the suitcase containing the Biosensor Scope - this item will be needed in your quest to get the Wrench.

Once you got it, enter the inventory and install the Biosensor Scope on one of the compatible weapons. In the example from the screenshot, we chosen to install the scope on SR M1903 rifle.

The scope can x-ray enemies - look around for monsters stored in capsules. One of the monsters has the Wrench hidden inside his body - we'll need to get it out.

This will require defeating the creature, which is a self-regenerating monster called Regenerador - to defeat him, you need to look through the scope to find parasites on its body and destroy them with shots.

Once the Regenerador is defeated, pick up the Wrench from his body - it should lie on the ground next to the monster's remains.

You can now return to the Overwrite Terminal and use the Wrench on it. One obstacle is taken care of. You can now use Level 2 Keycard on the terminal.

The machine will start preparing a Level 3 Keycard, but it will take some time to complete - you need to defend yourself from incoming normal opponents and Regeneradors. Either take them on in the terminal room or return to previous rooms, as the terminal doesn't have to be defended.

Once the Overwrite Terminal completes the task, return to it to pick up Level 3 Keycard. You can immediately use the card on the nearby gate.