itch.io

It's an incorrect label.  You actually need the B key.

-screen-height and -screen-width work for me.  I created a shortcut to the executable, then in the shortcut properties I added the following at the end of "Target": -window-mode borderless -screen-width 2560 -screen-height 1440

Note that those are all single dashes.

I've run into a weird softlock twice now where if an enemy dies during combat from bleeding, you will get a continuous series of non-interactable victory popups with no way to stop them from appearing.  Each of those popups even adds to your coins and gems, not that you can use them, since you can't get past the popups.  To be clear:  The popups keep popping without you clicking to dismiss the previous popup.

It's possible it's only triggered by the barbed wire bleed effect; I haven't tested with a spell or attack that causes bleed.