The battle against David Sarif, where Jensen can make his own boss confess and deeply regret an unknown transgression against the former that ended up contributing to the current mess.Talking down a hostage-taker with no assistance while the hostage is sobbing and crying and the unhinged criminal keeps periodically jabbing his gun into the hostage's head is one of the most intense experiences - and most rewarding when you win. The first battle against Zeke Sanders, especially given the fact that at this point you (probably) don't have the CASIE aug: you're literally arguing with someone based entirely on your own personal ability to read their actions, body language and personality without any of the assistance like the persuasion bar or the personality summary.
