This guide if for Fire Mission, which requires you to kill a minimum of 8 zombies with a single Dragon Strike on Gorod Krovi.
In order to earn this trophy, you will need to assemble the Dragon Control Module, ride the dragon to the Pack-a-Punch location, complete a lockdown event, and then leave the area.
If you haven't done any of those steps, you will earn the 2 trophies
Taking Flight and
Not One Inch along the way.
These are the steps involved in a bit more detail:
1. Build Dragon Controle Module by assembling the pieces with Groph Cyllinders.
2. Ride the dragon to Pack-a-Punch location.
3. Initiate lockdown procedure by holding
on the crystal upstairs.
4. Complete lockdown, once all enemies are defeated you can pick up Dragon Strike from the crystal.
5. Leave area via sewer in the basement.
6. Run a train in an area not covered by a roof.
Once you feel like you have sufficient amount of zombies chasing you, activate the Dragon Strike using
, then place the marker wherever is best for you. The zombies will be attracted to it and run straight for the location.
After the Dragon Strike destroys your zombies the trophy should pop shortly afterwards.