Use Space to switch between movement mode and combat mode. When in movement mode, click to move. When in combat mode, click anywhere to fire a three round burst, but it has limited range represented by the blue ring. Hold F to wait. Time only moves when you are performing an action.
This is just an attempt to combine real-time with turn-based inside a game. Update 1: Enemies now move diagonally towards the player to make themselves harder to hit, and may change direction upon taking damage or they can also change direction randomly. Enemies are also a bit tougher. Changing from moving to attacking no longer costs time. Movement no longer has a max range, and is at a constant speed. Added a health bar instead of just a number.