Hey there! Loving this pack! My only suggestions are a basic heart for HP and maybe a key for the chest and doors.
Also if you had to choose the best font to fit with this amazing pack, what would it be?
Thanks for the kind words and the suggestions, I will take note.
I'm not sure about fonts, unfortunately. Honestly I wouldn't worry about matching the pack, just finding a font you like. I prefer readable, non-stylized fonts (except for occasional uses like titles/headers). Some games even go high-def fonts against pixel art graphics.