The initial options screen.

Predicting the Emperor to win in turn 5.

Treachery card bidding. The Emperor has the Lasgun already so will he bid higher than the Baron's 4 ?

Harkonnen - Atreides battle. The Baron has sent a single troop into Arrakeen to attack the Atreides 10 strong force there. The Atreides smells a rat and foresees that the Baron is sending out his weakest leader. He then dials 2 troops to cover  the maximum Harkonnen strength and decides not to bother giving Duncan the shield.

The battle plans are revealed and we see it was a Harkonnen ploy to get rid of his Kulon. There are no traitors so the Atreides are victorious at a cost of 2 troops.