Thanks for giving it a go and for your feedback!
You can choose full screen under settings, and holding down the mouse button or attack key allows you to continue attacking.
It's mostly me working on the game, but I also have a small team consisting of an illustrator, Michael Malkin and a 3D modeler, Idam Amir, who I hope will be able to contribute much more in the future :)
This game has been in development since around 2016, but with very lengthy downtimes until I decided to be serious about it.