Thank you for checking out the game. There are basically two fighting mechanics in the game:
1. melee by just walking into enemies.
2. Drinking blood with CTRL (or other materials) and spitting them back at enemies for massive damage with LMB.
The spitting does more damage the fuller your stomach is and oneshots everything at >50% stomach fullness, BUT if you overfill your stomach you vomit automatically and take a big chunk of damage yourself. (this also does a explosion in a big range around you killing most things.
I worked hard on everything having the same sized pixels (or no "mixels"), but didn't have time to incorporate a custom font sadly. The borders around UI elements are also just one "real" pixel wide, while everything else is upscaled 600% pixelart.
Thanks again for playing my game and glad you liked some parts of it :)