This is really impressive! I love the world, it has a sense of scale and it looks cool. I think this project would benefit a lot from an artist who can bring it to life.
I found the sprint a bit too limited, and it was very rare that an enemy fought back. Also, it didn't let me climb buildings after buying the cybernetic legs :(
The upgrades made it very engaging, and you chose some cool sounds for the music. Definitely worth expanding on this project with a team who can do it justice. I'd even be up for doing the music!