Complete all six missions from The First Dose to unlock the MTL Brickade 6x6 for free, where it can be upgraded in The Freakshop to be a functional Acid Lab. Or, jump straight into the Acid Business by purchasing the MTL Brickade 6x6 directly from the Warstock Cache & Carry Website.
Once owned, this can be delivered to your location in Freemode through the Interaction Menu or found at The Freakshop.
