An Arm and a Leg: Galliard severs Pieck's arm to cause her to transform into a Titan without harming Gabi in the process. This is downplayed because Pieck can regenerate herself as all Titan Shifter's do, however.
Anger Born of Worry: It's very clear that Magath, despite being quick to call Gabi selfish and brainless, was indeed worried about her and afraid for her safety.
Call-Back: When Zeke is on the Paths, he looks at a starry sky similar to the one Ymir saw when she became a Titan Shifter. Could Ymir have been in this place as well?
Hidden Eyes: The eyes of the girl that was molding Zeke's body with soil in the Paths aren't visible.
Not Quite Dead: It's implied to be Levi's case, as Hange was quick to state he was dead when a member of the Yeagerists wanted to shoot his head to make sure he was dead and didn't let Floch see his pulse, and then ran away with his body.
Out Of Body Experience: When the Yeagerists talk to him, Zeke talks about being in a place that he calls the "Paths", where there was a girl molding his body with soil. Zeke felt like this went on for years when in real time, the whole thing lasted a few moments.
Spikes of Doom: Eren creates these using the Warhammer Titan's power to impale Reiner and Galliard's Titans during their battle.
Unusually Uninteresting Sight: The Yeagerists react to Zeke's nudity when he appears before them in a very casual way.