This is not OGL compliant and I love it. The replacement characters are very cool and on-brand.

Layout's pretty basic and could use some page breaks to keep things organized. I'd have appreciated a map or some procedure for moving from one area to another inside the temple. I think doubling down on the temple and its eldritch transformative nature would make this stronger, as cool as the Soviet antarctic base is. A table of intrusive fantasy adventure thoughts would've been cool - things for players to write down on their character sheet.

I've been deep in early D&D history lately and I think not having a fire hose hooked up to a tank of holy water at the entrance to the temple is a missed opportunity.

This is an entertaining and fun combination of the FIST world with the DnD world.  The vignettes, the monsters, the missing agents, the setting...all very creative adaptations. I also enjoy the references to WOC and the homage to Gygax.

The adventure is clearly written and concise. The layout is easy to read and follow.

Thank you for sharing this.