The entire Leland debriefing, in fact, can become one if you side with Albatross in Moscow, as it becomes increasingly apparent that Leland has no idea G-22 exists, and Thorton dodges trick questions to make sure things stay that way - until they show up in person to stop your execution. Few games have ever allowed the player to feel like as much of a Magnificent Bastard as you do when you play that sequence right.
Especially if you make it seem as if your other allies, i.e. Heck, Hong Shi, SIE, etc. are the ones Thorton thinks will come save him; Leland responds to them with mockery, but he has no idea G-22 are the ones who are about to hit them. Thorton can also spare Shaheed, and thus throw Allen Parker's careful planning for a loop by keeping that wild card on the table.
If Thorton has a low approval with Madison, she'll beat him over the head with a statue and then blast him with a shock trap. Watch it here.
In the finale, when Leland protests that the government won't allow his involvement with Alpha Protocol to be unveiled, Mike's response is so crushing that it stuns him into silence.
Mike:Alpha Protocol? What's that? They'll just deny it exists and shut it down.
Another slap in the face to Leland: if you have a Friendship with Marburg, and you use "Dossier" with him near the end once you have enough evidence that Leland has no loyalty to Marburg, at the ending sequence, Marburg will appear to Leland's initial delight, til Marburg walks away from him with a disgusted "Hmmph." Mike has a lethal smirk stating that it looks like Marburg has finally had enough of him.
Completing the game on a Pacifist Run, without using lethal force. Think about it. Mike Thorton, alone, with limited support, is betrayed, cut off, and forced to fight police, mercenaries, terrorists, Deus Vult agents, G22 operatives, Triads and Russian gangsters, the Chinese Secret Police, CIA agents, and Alpha Protocol soldiers all armed to the teeth and willing to kill him. He stops terrorists, brings down arms dealers, puts a halt to assassinations and riots, gets captured and escapes again, and generally wages a one-man war that ends with (potentially) the collapse of Halbech, the destruction or exposure of Alpha Protocol, or Mike Thorton taking over the world. And he did all of this without killing anyone.
Though the game still says Sean Darcy died, even if you shot him with tranquilizer darts.
Well given that Darcy was an active agent going in and out of Grey Box and Mike had to shoot him full of darts, it may very well have been overdosing on so many tranqs in such a short time.
That, or Darcy might have fallen from inside the top of the tower to the bottom past the stairs, thus breaking his neck.
Also, Darcy did keep chucking grenades at Mike so we can assume he's got explosives on hand. An ill timed knockout round could easily lead to Darcy falling out cold and letting go of live explosives....
Taken extra further when you are sent on the mission to take out the Triad defectors and you use nonlethal force on them. Despite only knocking all of the Triads out, you're still treated as having succeeded in the mission, apparently because you made the Triads return to Hong's fold by terrifying them with the fact that you could have used lethal force on them but apparently just knocked them all out to prove a point.