Thank you for playing "Mono".
We have just released Ver 1.1.0!
This update includes the following feature improvements and bug fixes:
Added Steam Achievements If you already have a completed save data, the achievements will be unlocked automatically upon launching the game.
Added Screen Mode Toggle You can now switch between Fullscreen and Windowed modes from the Options menu.
Adjusted player behavior
Adjusted certain maps
Adjusted the behavior of certain bosses
Other minor bug fixes