Here is the full list of all 20 Tesla vs Lovecraft achievements.
Recover and Operate the Mech
123 Deep Ones must die.
Complete Tutorial
Recover lost Tesla Backpack
Purchase a meta upgrade
Collect 100 crystals
Choose an EPIC perk
Kill 1000 Spiderghouls
Kill 50 Parasites
Kill 500 Fire Vampires
Kill 50 Polyps
Kill 50 Shoggoths
Repel 100 Tentacles
Activate the Wardenclyffe and save the world.
Activate the Wardenclyffe and save the world in Aether Plane.
Activate the Wardenclyffe and save the world in Eldritch Plane.
Complete Chapter 1
Complete Chapter 2
Complete Chapter 3
Kill 200 Spawns of Dagon