Evil Genius 2: World Domination

This is grindy. The Agents need to show the door symbol and leave on the boat for it to count. Eli's Silver Tongue ability is helpful to drain resolve and get them to leave quicker.

So having completed all 4 campaigns I still hadn't got this. This is how I did get it...eventually.

Expand your Casino area when you start. You can wall all but one external door so do this. Create a set of paths using walls to funnel agents back and forth. Using the roulette tables and pianos (once unlocked), place them against the walls. One on the top wall then next one on the bottom. This stops agents walking right past as their pathing makes them zig-zag. I had 4 corridors of this lay out before reaching my base.

Progress until you have all deception minions (valet, Socialite etc) then delete all your criminal networks.

Build a single criminal network in each of the Forces of Justice (Eastern PATRIOT, Southern SMASH etc). This stops the heat rising above 50 and the agents stay low quality. Train Valets for the tables (I had about 30 valets by this point), 10-15 of the other deception minions and simply made sure I had enough gold and waited. Since beds, food tables and morale equipment isn't suspicious build them on the edges of the casino so staff don't travel far. Using the tag set the whole Casino green for DISTRACTION. This will make your staff actively target agents and drain their resolve. Hope this helps. Sure someone has a video that shows this. I dunno how to do that.