To earn this trophy, you need to kill 10 of the half-breed, Lycan enemy characters. You earn this Silver Trophy extremely easily, and in the first chapter after the prologue.
From the Main Menu > Chapters > Chapter 1: Always A Knight > The Hidden Enemy.
Load from this checkpoint. You start out with an automatic gun that you should use here, and some Lycans to kill near you.
To kill them, just stay against the wall where you dropped in. Usually (one-by-one) two Lycans will creep towards you, before they charge. Shoot them with your auto rifle until they go down, then run over to them and press
to finish him. Back up to the same wall from before and wait for the second Lycan. Repeat the process. When a third one drops down, shoot it until it drops, and after you run up and stab it, it will take off.
If you don't reach your 10 kills in that run, just kill the first two Lycans, then reset the checkpoint (you won't lose kill count progress) for two more. Repeat 3 more times for 10 total, and you'll have this achievement as soon as it's possible.
I am unsure if the 3rd Lycan from that area, the one who you have to chase, but ultimately will kill with an arc-rifle, counts toward these 10. (I think this one will count, but I don't think the Elder Lycan semi-scripted fight in Chap. 5 counts. If a anyone can confirm, please don't downvote, but leave a comment that you confirmed it, and I'll post your name as the credit.
Please vote if you found this helpful, and please comment if you have any additional insight or questions. I always reply within 24 hours. I am happy to help, so feel free to add/ friend me on TT, TA, PSN, or XBL, username: Danokitty.
Happy Hunting!
-Dan