Hey this is super cool! Praise:

• The enemy variety is actually interesting, all the factions are sufficiently different. Good collection. 
• "Just use bears" as a guidance for system-agnostic stats is great – is this common or an innovation? I've heard of it for making up an encounter on the fly, but maybe not as an agnosticism tool.
• Space vikings is a super strong two-word pitch, and the funeral pyre with literal valkyries does live up to it. Very metal.