User blog comment:Charly Cohen/Rapture Zoo/@comment-1330314-20101205195109/@comment-3024470-20101206033015

Ah, you're very close with your second thought of what Retaliation does, here's a hint: it needs something to activate it, and it is not a plasmid. What activates it happens a lot to beginners to BioShock. As for Repetate, it has more to do with second chances, some form of time travel........