Kirks gusset:
CS25.121
(d) Approach. In a configuration corresponding to the normal all-engines-operating procedure in which VSR for this configuration does not exceed 110% of the VSR for the related all-engines-operating landing configuration, the steady gradient of climb may not be less than 2·1% for two-engined aeroplanes, 2·4% for three-engined aeroplanes and 2·7% for four-engined aeroplanes, with – bla bla bla bla
Take off climb second segment is 2.4% at V2
You have no idea what V2 is on final approach. You do know exactly what Vac is. I'm quite sure that in the case of a go around most pilots would follow their fight directors which will in most modern jets guide to Vac in the single engine go around case.
Vac gives a 2.1% gradient or 2.5% Cat II/III