It has solid animation from Megaman, nice cinematography, a great use of his abilities.
However I feel the face looks a little too chibi and kid like due to rosy cheeks, a nose too soft and massive eyes. He should look more like the original games in my opinion, at least he looks more like a man.
Also the materials look very "plastic" rather than metal, sorta. I say rein that in a bit, lower the reflection slightly.

Also we don't see the foe he's fighting, which I think does hurt the epic feeling a tad.

I'd recommend improving upon those things, but there's certainly some passion here. I enjoyed it.

Kinda fun

You know, it has a weird appeal to it. It's not often you see just a small animation based on two cops just chilling doing their boring job. Builds a bit of character.
What I'd recommend is improving the rigs though, I think the emotion is important to convey with these two. And the rigs are really holding that back (and the stiff models in general. Perhaps make your own or hire someone to make custom models?)
But the voice acting is actually pretty good, and the dialogue's nice. It's enough for me to want to see where it goes.
Though it does need a bit more of a hook in terms of premise. Perhaps making some sort of larger event happen that leads into an actual story. Would help create more character driven events.
Anyway, I liked it so good job.

I'm pretty tired of this Genre. The only reason VS stood out was because of the extreme build variety and fun gamebreaks.

But everything else after, just never rose even close to that.

Some good old feedback. I'm gonna focus on the boss.

So, the boss. Yeah. I think one of most critical issues here, is that you've made this boss far too aggressive with little regard for the player's own aggression.
In a hack and slash. This boss has next to no telegraphing window for most attacks. Moves around extremely fast. The beam forces the player to take no aggression lest they just eat damage. And the lack of telegraph time make the more aggressive approach less appealing. In a hack and slash. I was having fun, till this boss fight. Because the boss didn't feel like it respected the flow of combat.

And the projectiles spawned distracted the lock on system.

Anyway, that's my main issue. Other issues, others have said, but the boss is really where I have a problem.

Honestly, you did pretty well for tributing Nier Automata in 2D. I say expand on the mechanics and see how far you can run with the idea

Man, this collab was a wild ride I gotta say. I'm proud to of been apart of it.
Next time, in future, I'd like to refine what I make for it, really get a beautifully polished piece. Though with the two I made for this one, they got a great deal of soul, so I hope you all enjoyed it.
And thanks to everyone who was part of it. I definitely wanna collab again in future.

FIGHT TILL THE BITTER END!

Whoa, that's a trippy design. What's the story behind it?

Edit: I see, well the experimenting came out well. Do you intend to do more art like this?