This is a really neat concept! The art style is also great.
It just felt a bit hard though, mostly due to how unforgiving it is. There should probably be some sort of life system in place, at least early on.
True, it sure is forgiving. Our plan was to add a health system at first, but then we thought it'd be better to not have a health system.
And to reduce the difficulty, we added the unique powers. It's preset in the bottom left, and it's hotkeys are mentioned in the description.
You have 3 chances, choose the grave you want to place, click the hotkey for the power-up, and select the place you wanna place the grave. It creates an instant grave for you.
We couldn't do more than that, cause the concept is, dig their graves, or your own.