Okay.
Playing around I've eventually managed to figure it out. This formula seems to have worked:
=IF(COUNTIFS($H$2:H2,H2,$F$2:F2,"=Criterion One")=1,"yes 1",IF(COUNTIFS($H$2:H2,H2,$F$2:F2,"=Criterion 2")=1,"yes 2",IF(COUNTIFS($H$2:H2,H2,$F$2:F2,"=Criterion 3")=1,"yes 3","-")))
Couldn't...