This is really simple to get and, goes a long way to help your team and, coins during a session.
As the Engineer class, follow to on screen icon (pink spanner) during a game of Gardens and Graveyards and, you will arrive at a base plate on ground. Hold down
until the teleporter is built. You can also build the surrounding Zombot Turrets (usually 3no) to protect the teleporter and also get you the Zombie Defense trophy.
Just build three in one game and, the trophy will unlock. The only issue that can hinder your progress is another Engineer on your team also building teleporters. Just try to beat them to the location
