My plan for this game at this point was primarily to create a fast paced third person shooter with platform elements. I really wanted the player to have to keep moving forward. In addition I planned to include a system where the player’s energy bar was also their health, tying health and ammo to the same resource. In the prototype, there is a second purple bar that governs shot charge as I had not yet decided how to integrate that into the main health and ammo bar. In addition, crouching restores the player’s main blue bar.
Game Development Blog 