Art: Looks great overall. Good use of color. Nice and clear, great thematic cover art. I wish the map was a little more interesting than a 3x3 grid.
Writing: Pretty bare-bones and functional. It does what it needs to do but relies heavily on the art to establish the vibes.
Game Design: Conceptually, this is great. The various effects of the artifact are suitably horrific. However, I have concerns that it'd be too easy if run as written, depending on the player group. I don't see any obvious reason for players to remove their suits, and there's really only one of two fairly easy combats between them and the magnets if they realize the solution right away.
Theme: There's an artifact from an ancient civilization, so the Warden could come up with some mythology around it. However, that's not addressed at all in the module.
Layout: Full marks. This is very usable design and including connection lines between the room description boxes is a nice bit of extra help for the Warden without wasting any additional space.
Utility: If not for the issues mentioned in Game Design and Theme above, I'd give this full marks. However, if I was going to run this, I feel like I'd need to do some work myself first on developing the artifact's lore and coming up with a contingency plan if the players just kill the janitor and go straight for the magnet.
Favorability: I've only reviewed 10% of the modules so far, but this is my favorite at this point.