This Texture Pack simply replaces the Pumpkin Blur with the interior of The Doomslayer's helmet as seen at the start of Quakecon 2018's DOOM Eternal Gameplay Reveal, except it's mildly transparent to give you more visibilty!

If you want the full helmet experience, you can download the opaque version here:

https://www.planetminecraft.com/texture-pack/doom-eternal-pumpkin-helmet/