Great implementation of the theme - The multiple endings adds to replayability and gives the player at least a philosophical choice on whether or not to upgrade.
I enjoyed that the game was fully playable, but I think in future some more variation in enemies and player abilities would make the game more challenging and more engaging. I also think having currency drop from defeated cyborgs (maybe computer chips or something like that) to trade for upgrades would encourage the player to take more risks with combat.
Hope the feedback is helpful :)