Iron Man 3 (2013)

Iron Man 3 takes places about 6 months after the New York invasion. Since he was the one who nearly died when sending the nuke into the Chitauri mothership, Stark now has to deal with posttraumatic stress. Since he know that a second alien invasion may not be as easy to stop, his only interest is designing new and improved Iron Man armors.
In the meantime, a figure from his past emerges and reveals to be the mastermind of all the terrorist attacks which took place in the US, in recent times.
While the trailer for Iron Man 3 showed that it will be the darkest of the Marvel Cinematic Universe installments, the excitement the fans had for this sequel had one other reason: Tony Stark was finally going to face the Mandarin, his arch nemesis from the comic books. It wasn’t so, though, even if the All Hail the King one-shot showed that the Mandarin actually exists.
By the end of it all, Tony Stark managed to deal with the PTSD and removed the arc reactor from his chest.
