But this is no typical lunatic. It’s a Half-breed…and from the sound of it, more are lurking in the area.
Eliminate the Lycans
Three Lycan Half-breeds roam the basement, but fortunately they attack one at a time. If you need ammo, hustle to grab the ammo crate glinting on the ground directly ahead of you (46) as the battle starts. Note that there’s also another crate in an alcove on the other side of the machinery stack (47).
How to Dodge a Lycan
When a Lycan attacks, the beast sprints at you, makes a jumping lunge that inflicts damage, and then tries to hurry away before you can shoot. During each Lycan’s approach you see a red-highlighted “X” appear. When you see this prompt, quickly press 
on your PS4 controller. Galahad dives and rolls sideways, evading the Lycan’s lunge attack.
How to Fend Off a Lycan
If a Lycan gets in close, it can force you on the defensive and trigger a tense standoff. Tap rapidly when the prompt appears to keep the Half-breed monster from tearing out your delicate, fleshy throat.
How to Kill a Lycan
To kill a Lycan you must first wound it with gunfire. A wounded Lycan drops to the ground, immobilized for a few seconds. Rush to the fallen creature for an “Execution” move—that is, press 
to finish it off with a merciless knife thrust to its heart. Make this move quickly! Lycans recover from gunshot wounds within a few seconds and then rush away.
Here are three basic strategies you can try:
- Cut off Lycan approach angles.Stand in a corner and hold in
to ready your aim. This way, you can see any Lycan that rushes you, and quickly adjust your aim to wound it with gunfire. Once you’ve killed a wounded Lycan with the execution move, hurry to the next closest corner and take up aim again. - Use Blacksight effectively.Once a Lycan starts its charge, immediately enable Blacksight if you have it available. (Again, check the meter underneath your weapon readout.) You should be able to put the beast into a downed state before it gets close enough to slash you.
- Use your Falchion’s Alt-Fire.The M2 Falchion rifle’s secondary fire is a concussive air blast that can briefly stun a Lycan, knocking it backward. Target a charging Lycan and press
for knockback, then quickly pump it full of primary fire bullets. When the creature falls wounded, finish it off with the execution move.
After you kill the first two Lycans and stun the third one with gunfire, your final execution move fails—the third beast breaks free. (This is a scripted event.) Galahad gives chase but the Lycan manages to escape the Underground.