Cool boot up sequence, all mech media needs a cool boot-up sequence.
There's some odd behavior with the mouse pointer when you change the screen resolution, as in, the point doesn't remain on the tip. Might be a UI scaling issue.
Also, the mouse pointer defaults to center of the screen when opening the settings menu.
The "it's not frozen, I swear" warning was only on screen for a few seconds at most so whatever was worrying you wasn't an issue.
There's a stutter whenever you use a weapon you haven't used before, but only the first time you play the game. It's not a big deal, probably just shader cache.
The menu after a game over doesn't work, can't retry, go back to the main menu or quit. However, the same options work fine in the regular settings menu. The menu after finishing a stage has similar issues.
I like the new cockpit with the 3D wireframe model in there, but some kind of rear view camera would be more useful. Also, maybe a little radar animation and higher range because enemies kept sneaking up on me. Maybe they are too quiet.
I couldn't get any weapons besides the starting ones to work in the arcade mode but they work fine in the stages. I could select them but they wouldn't fire. It would be nice to have a loadout screen regardless.
I got better at the arcade mode over time but my high score was only 18.
Overall, I'm sad to say that the game might need a refactor of some sort because the menu, weapons and inventory work differently depending on the stage when these should be modules that behave identically everywhere.
Either way, keep up the good work.