There *won't be any spoilers* here but GOD I just saw episode 22 and I feel lost for words..
Seeing Levi fight in anime is a lot more action packed and exciting. You'll clearly be able to see why he's called "humanity's most powerful soldier". His moves were pretty damn awesome!
Even Mikasa was watching him like- Dayum..
But other than that it was a very VERY heartbreaking episode because of all the loss..
Also, I don't know if I missed it, but there were some scenes in the anime that weren't in the manga I think. Maybe they're trying to slow the anime down??? before they catch up with the manga?? -is one of my guesses..
But I personally think the extra scenes helped me see what all the characters were feeling on the inside.
Everyone should definitely watch this episode!