One thing that I was planning to add is some way to know how much max HP the enemies have (as currently its hard to strategize against them until you've played a lot), as well as to properly explain how to use the buffing system. To semi-fix this past the deadline, I'll provide a few hints through itch.io's comment feature:
The stickfigures have 3 HP, swords have 5, and ghosts have 4. The normal ⚠️ boss has 30 HP, while the secret boss has 45.
Also the way that the buff works is it simply increases the damage of you (and your drawing if its alive) by 1 point, with you both normally doing 1 damage (+1 more on a crit).