User blog comment:XGlass Reflection/Ep. 21 Review~ Holy Shit/@comment-179280-20130901031331

I almost shat my pants with the Spec Ops Squad death scene. I didn't expect them to throw Vogel im Käfig holy crap... And then Female Titan vs Eren with Attack ON Titan playing in the background.. gasp!

The scene of the two Titans fighting was specially noteworthy. I bet they blasted their budget animating all that (and if you notice, some scenes were missing from the episode, but not as severe as Epi 13, although it is perfectly justified).