That song is hype, and Lethal League 1 was always so fun to watch.
... but I have to say, what's with the weird animation frames on the characters? Why did that rotation look a bit janky? I guess they only had one set of animation for the game and didn't have a separate, smoother set for the trailer.
It's probably intentional, sadly. It's emulating how the characters moved in the first Lethal Leauge (2D sprites based on 3D models > 3D models in a 3D engine with animation frames missing), in the same way that GGXrd does.
I'm not a fan of doing it that way either. Especially when, as we can see with the background characters in the trailer, the game could look even better/smoother.
This smooth.
Why some devs keep doing choppy animation on purpose, I have no idea.
All that aside, the game has an amazing aesthetic, solid looking gameplay, and the fact that Naganuma's supplying some tracks elevates it tremendously.