Wrench Lurker is a Gene Tonic which quietens the user's footsteps and increases Wrench damage against unaware or shocked opponents. Both versions of this Tonic can be equipped at the same time for an increased effect.

Wrench Lurker “ When fighting those stronger or faster than yourself, you'll need every advantage possible in a scrum. Wrench Lurker allows you to make the most of your opportunities when your antagonist is caught off guard. ” Effect: Increases Wrench damage by 150% against unaware or shocked opponents and quietens the user's footsteps. Location: Found on the banister next to the Gene Bank in Neptune's Bounty after one has captured all three Spider Splicers with the Research Camera. Note: Picking up this tonic causes Rose to appear and attack the player. Can also be purchased at Gatherer's Gardens in all levels from Arcadia to Fort Frolic. Cost: 20 ADAM

Wrench Lurker 2 “ Only a fool fights fair. When you want to take them down from behind, be smart, use Wrench Lurker Two! ” Effect: Increases Wrench damage by 200% against unaware or shocked opponents and quietens the user's footsteps. Location: Available for purchase at Gatherer's Gardens in levels from Hephaestus to Point Prometheus. Cost: 50 ADAM