Ireland need to win by (at least) two clear goals to be sure (to be sure).A high scoring draw in the Germany Cameroon match would see us going out on a 1-0 scoreline because we would only have 3 goals for. (at least I think thats what (c) above means.
But most importantly we have to beat the Saudis - anything less and we're out.
Next match (if we qualify) will be against Spain who looked pretty awesome in their first two games. They may be a bit suspect at the back, but then again who are we to talk !