A fun start! I like a lot of the systems you have in the game, like the text to speech voice, the mech customization and the art is cool as well. But a lot of things feel incomplete. The monsters only ever spawn from the right and they spawn faster than you can kill them. Lots of vague menus where it's hard to tell what it's telling you.
Honestly I liked the first one better so far. But if you keep working at it, you have the foundation for a fun game. Keep going!