Find and Equip 5 Different Mekton Upgrades
Gizmo can be found at the Chugyard by Bricktown, and he starts a main quest where you obtain parts to then be granted use of the Mekton. Inside the Deadzone, you can find crates that contain upgrade parts for it, and after obtaining the first crate you are given a sidequest you can track that will point you to more upgrade crates one at a time. There are a total of 14 crates you can find, but you will only need to find 2 or 3 of them, as each crate contains 2 – 3 parts. Once you have found them you can press the prompt while operating it to access the customization menu, then equip any 5 parts other than the starting ones to earn this achievement.