In Dying Light 2, the hero needs to get weapons to defeat enemies. The hero will get to the sleeping area or safe zone in the Antenna Tower where there is a stash bag that the hero can get pre-order dlc gear. Get the legendary axe. But before that, follow Spike to the first large house with the last party, and get the first weapon Grubby Bat.
Then find a way to the antenna tower, and from there, defeat more enemies. Activate the power generator, and then get the legendary axe from the stash bag.