added hard mode. you unlock it by completing the previously normal game, now easy mode. (new achievement btw)
you can select the mode in the main menu by clicking on the mode name close to start game
the new mode will spawn all enemies randomly (with a specific %) and sometimes spawn special waves of multiple special enemies, like mixedcase and hack rockets, and boss waves!
note: new mode is in beta so it will be improved!
Changed files in this update