What If The Flood Appeared Earlier in Halo CE

I saw this mod on the Steam Workshop and I just HAD to play it. I'll be covering the first level, "The Pillar of Autumn" on Heroic
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Check out the creator's channel! - ‪@Kobe_Bryant_real‬
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Mod Description:
The UNSC Ship “The Pillar Of Autumn” is engaged with Covenant forces over a mysterious Ring World. As Spartan 117 the "Master Chief" seeks to escape the coming Covenant onslaught, an ancient and malicious enemy is accidentally released onto the ship, slaughtering everything in its path…
What if the Flood was released in the start of Halo CE?
A custom campaign that introduces The Flood from day one, making them a significant and constant threat throughout the rest of the battle for Installation 04. On top of that, each and every level has been hand-crafted and rearranged down to each spawn, weapon, and enemy encounter. Voice acting, sounds, and scripts have also been added to make this its own unique experience.