When exploring the lighthouse town, you will always encounter the chainsaw mini-boss. Kill the enemies with red light around the mini-boss to obtain the lighthouse key. When you are at the foot of the lighthouse, turn left onto the trail and follow it all the way to the end. Open the door with the key to get the gun "Starfire".
In Ruins 2 DLC, to obtain the gun " Starfire ", you first need to go to the lighthouse town.
During the exploration process, you will encounter the chainsaw mini-boss. Kill the enemies with red lights around you to obtain the lighthouse key.
Then, when standing at the foot of the lighthouse, turn left onto the path and follow it all the way to the end.
Use the key to open the door and you will get the gun "Starfire".