The "Insane" level has the abandon card, that's what they're talking about.
The start locations are random in Crazy, so you can try starting over a few times until you find a position you like. Starting in smaller bonuses helps.
Also note the AIs are on two teams. Make note of who you're attacking - you want to attack the teams roughly evenly. If you focus too much on one team, the other team gets too strong to take down later.