| you just need turrets covinrg your other turets, it's not hard to have them all protected. Late game you get tons of the elete blow-everything-the-fuck-up squads that are worse then any super agent. They start agressive just killing and blowing everything up it's really quite a bitch. The killing all your top level guys is the major source of frustration.
On the final island I had a massive Freezer, massive power room, and shitload of sentry turrets. One prision on the outside to pop in superheros (they will break out).
Well basically I had 2 entrances to my lair (one near each heli-port), and a bunch of turrets protection the path between the lair and it (and turrets protecting the turrets).
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