itch.io

I like the mission! This may sound nitpicky, but I notice you consistently use "Havok" instead of "Havoc", or rather, "Havoc Brothers". I think it is important, especially in this case where the missions are seen as applications, to adhere to OPRs naming standards. Same goes for "Daemons" instead of "Wormhole Daemons" - when writing about specific armies, you should use the correct nomenclature. 
As said, this is is a minor nitpick but would save some Editor time in correcting you in the future. The mission itself looks fun and engaging, I think I might try it in the future!

Very unique concept and special rules. This looks like a mission you have to purpose-build a list for. The movement penalties for getting off terrain are extremely harsh. I feel this mission will heavily favor certain armies while severly hampering others.

Nice theme, the way the three stories gain their abilities is a bit unclear. It says "two abiltiies", but three are listed. Is it randomized? Does the librarian player pick and choose? This is further complicated by two of the rules having Tough values - do I choose one of these and then the regeneration ability? Otherwise I like the theme and execution!