How does your submission match the theme?
Each element serves multiple interlinking functions.

Enemies:
Act as an obstacle
Allow the player to gain height
Drop blood

Blood:
Acts as HP
Acts as score
Allows for double jump

Double Jump:
Allows for recovery from falling
Allows for combos
Gives a risk v reward
Allows the player to get to the second layer

Multiple Layers:
Allow for the player to play safe or play with risk and more blood
Gives more chances for combos
Keeps platforming diverse

Third-party resources
BFXR - For generating sound effects
Construct 2 - For creating the game
Aseprite, Paint, Paint.net - For creating artwork

Contributors
Brandon Lea - Design, programming, art, sound, testing