This module gives me a lot of Annihilation/Scavenger's Reign vibes which is good as hell! It's got an engaging hook and the ongoing "starve or further your assimilation" push/pull is an AWESOME dynamic to get players role-playing and interacting with your NPCs. It's all organized well and it's dense without being difficult to read.
I do feel that the visual treatment, while solid in its own right, doesn't really mesh with the content or themes. Following the "field journal sketch" aesthetic direction alluded to by the illustrations would make a lot of sense and communicate the themes visually as well as textually.
When it comes down it though, the writing is what matters here, and you've got some winning writing. Lots of fun levers to pull and likely multiple sessions of evocative alien wilderness crawling. What's not to love??