This Seeking Tech guide will explain how you can get the Deadly Duet trophy and achievement in Resident Evil Requiem.
This will unlock when you “defeat the two singers in the main story.”
One is found in the Bar and Lounge room while the other is located in the Conference Room. You need to visit these in order to progress through the story.
The one in the Bar and Lounge can be isolated from the two other zombies if you run back downstairs and a little bit to the hallway that leads back to the Dining Room. If you timed it just right, the regular zombies should stop chasing you while the Singing Zombie should still be going after you. Check out the videos below to see how it’s done:
The one in the Conference Room is surrounded by three zombies. To make this fight easier, climb over the small cabinet when you enter and then head back to the small cabinet. If you time it correctly, the zombies will try to climb over the cabinet, leaving them open to headshots. Check out the video guides below to see how to make this fight easier:
If you don’t have enough ammo as grace, then you can fight both Singing Zombies as Leon when you take control of him: