I handled the scripting for the user interface and game menus throughout. Also worked with artists to oversee the pipeline of art assets into the game where I set them up for engineers and scripting.
Worked out the design for the various power-ups in the game. Documented the design and technical details for engineering to implement.
Handled testing and balancing for the power-ups in the game and general mechanics. Iterated on how they function and behave to create a uniform experience based on skill rather than randomness.