Thanks for the kind words XENA_SN! Are you playing the latest version (1.0.0.5)? The last stage is definitely doable (although still quite difficult!) but in previous versions the final stage was impossible so I'm wondering if you have one of those (definitely recommend going with the latest if so, lots of QoL fixes that make the game a lot more playable).
Thanks again though, It's super awesome to hear that you enjoyed yourself! :)