Talk:Specimen d04 "Archetype Stalker"/@comment-23.116.209.24-20131020014533/@comment-4632427-20131021040002

As far as I can tell, the odds of what type you get vary depending on what unit you throw into the test facility. You'll always get the same tier, but exactly which type can vary.

From what I've seen, Arctic Troopers seem to have good odds of producing Arch Stalkers.