Keep at it.
The animation was pretty choppy, but it was okay. I'm not much of an art critic, so I don't have much to say about it.
You should really have someone proofread your subtitles and make sure they make sense. I had to do a lot of work to keeping up with what was happening because the English was confusing and because the whole scene went by pretty fast.
The intro text was helpful and tied the scene together and gave it a purpose. But it wasn't on the screen long enough, so I couldn't read the whole thing.
The audio quality was very uneven. Mostly the sound effects were fine, and the voices were not. Try to get a better microphone for recording the voices, and don't add such strong effects to the audio. You should also even out the volume. For example, the gunshots were way too loud compared to the voices.
I didn't understand who the purple-haired guy at the end was or why he was there.