User blog comment:Charly Cohen/Rapture Zoo/@comment-1330314-20101205195109/@comment-3024470-20101208003423

Wow, you're so unbelievably close, and I really want someone to figure it out, so I'll do a fill in the blanks for you.

Retaliation only activates when you __i and the activation results in _e__h to the enemies you hit with the plasmid.

Okay, so with those handy little hints, can you guess what it does?