World War Z zombie outbreak: Invariably, the government would hold off giving the order to shoot infected citizens for fear of huge compensation claims, until it was too late and society was overwhelmed. Also, the attorney general would probably rule that the undead are covered under the unborn protection clause in the constitution. Either way we’re screwed. In the middle of the crisis a significant number of TDs would continue lobbying for new roofs for local GAA clubs even as zombies were eating the faces off their constituents. Fianna Fail would point out that the world never ended when they were in office.
Armageddon Earth threatening meteor: The Irish government would almost certainly attempt to avoid making any financial contribution to the planet saving exercise. Curiously, we would be bitterly disappointed at the refusal of some other nation/entity to compensate us for the damage caused by the meteor, with large numbers of Irish people believing that Ireland suffered more harshly than any other nation. The Irish language lobby, pointing out that the giant tidal wave that destroyed Connaught also destroyed a large chunk of the Gaeltacht, would call for increased Irish language funding.
Independence Day alien invasion: As above, with the exception that Richard Boyd Barrett would protest at the US’s destruction of the alien invasion fleet as a racist and imperialist act against a misunderstood culture. Bord Failte would quickly prepare, just in case, proof that the aliens forefathers came from Belmullet.
Vampire outbreak: an outbreak of vampirism would be dealt with in one of two ways by the Irish state. The first would be to round them up, put them in institutions, sexually assault them and then apologise, paying compensation.
The second would depend on how well organised the vampires were. If they registered to vote, deputies would be afraid to challenge them for fear of losing the vampire vote, and before you know it we’d all be required to make compulsory blood donations, and the importation of garlic would be highly taxed (cough). A state board would be created to advance vampirism, and it would be made compulsory in schools, and although everybody would be required to become a vampire by the time they do their leaving, most people wouldn’t but we’d all pretend we were. Before long we’d be lobbying the EU for vampirism to be made compulsory across Europe, and bitching about the Germans when elite Bundeswehr vampire hunters arrive and wipe them out. Once again, we’d seek compensation.