Halo 5: Forge Warzone Firefight

So I don’t have a Xbox and my cousin who lives far away is Playing Halo 5 Guardians for me for Customization items and recommended Halo 5 Forge, Since I love Halo and been a fan since Halo CE. I’m a PC Player and I don’t want to Pay for another System he told me about Warzone Firefight, and Firefight is one of my Favorite game modes in Halo: Reach (I had a Xbox 360). I would love that on PC, What do you guys think? Let me know!