Yea, so I would put my feedback in order like this:
Font: Stay more simple.
Animation and dynamics: Glorious!
Voice acting and writing of the dialougues: Done to carelessly. Every word has to be precice and set with the purpose of the viewer understanding the world, the story and / or the thoughts and feelings of the character. Some of the dialougue seemed pointless to me "Lets end this party." it is important to have characterising sentences, but the voice actor needs to be ble to bring life to these terms. To say them in a pace that feels natural for the character. Also I think that the boss dude from the "good guys" (?) should look older and more classy judging from the dialouge and voice intented for him.
And I think there has got to be more build-up. A chance to understand the world.
Background Animation: Sometimes we need an overview of the place, like you did with the crater. It goes for cities as well.
Well, there is much to improve, but also a lot of things which are quite nice. Enjoy your work