The crises appear randomly, and I think the most I've ever had was 3 in a single game, so you can't really rush to get them except by playing a lot. There's still one I haven't gotten, since it's never appeared in my games.
As for the ideology achievements, play on a big map that has lots of planets with very few opponents so that you can get a whole lot of colonization events, build the ideology producing buildings on all your planets, and don't be in a hurry to win the game.