The Irish government has apparently little or no options - everything is delivered as a done deal, with no reasonable alternatives. Therefore the government doesn't have to actually govern, just administer the country whilst implementing directives from the Troika.
Under such limited conditions, its fair enough to say Enda Kenny has done a relatively average job. But then, if the job is only to administer, anyone could do it. The real governance decisions are being made by the Troika.
Enda Kenny's government has had its fair share of scrapes though - its communication policy in 2011 was *woeful*, with FG coming out and saying X, and then Labour rushing out to denounce X and to underline no decision had been made. Kenny's flip flopped from telling a home audience that it wasn't their fault, before rushing to Switzerland to tell anyone who would listen that it actually was the average Irish persons fault. His ministers were raked over the coals for daring to whisper a second bailout was required. As late a Jan 2012 Kenny assured an audience in London that no second bailout was required for Ireland. Now his ministers are running around telling everyone that a second bailout will be required.
Generally speaking, Kenny has done okay by meeting or barely exceeding extremely low expectations of him. Irish taoisigh always benefit from the fawning devotion the media have to their position - look at Cowen and the way his arrival on the scene was hailed in 2008. Kenny was always the baggage that Fine Gael was dragging along with it. He hasn't been as bad as his detractors might have feared, thats about the best that can be said.