Prince Rystiya's Starship

Prince Rystiya's Starship is a simple 2D space shooter. It's a student project made by a student from SMU Guildhall.
The rebels claimed that they fought for freedom and democracy, yet they built a totalitarian regime instead. As a heroic imperial fighter pilot, you will eliminate waves of rebel scum and hunt down their leader.
Your ship is highly advanced. It has multiple weapons, and its shield can endure extreme damage. However, you must keep a close eye on your energy bar. Your shield, weapons, and engines all consume energy. Without energy, you would be extremely vulnerable. 

> 10 waves of enemies.
> Manage the energy supply on your fighter.
> 3 intense boss fights.
> Free to play.

Ship control:
-Press WASD to move (costs a small amount of energy). (Move the left joystick on the controller)
-Press/hold J to fire the shotgun. It's short-range and inaccurate but has a very low energy cost. (Press the X button on the controller)
-Press/hold K to fire the default gun, the most versatile and useful weapon. (Hold the A button or press the left joystick on the controller)
-Press/hold L to fire overcharge. It's long-range and accurate, but it has a long reload time and high energy cost. (Press the B button on the controller)
-Press I to fire anti-matter missiles (one use per life). Use A and D to control the missile, and press I again to detonate. (Press the Y button on the controller)
-Press Q to toggle the shield (it takes energy to maintain the shield and absorb damage with it). (Press the top-left button or left trigger on the controller)
-Press E to toggle turbo boost (greater thrust, greater energy consumption). (Press the start button on the Xbox controller)
-Press Space to repair (very energy inefficient). (Press the top-right button or right trigger on the controller)
-Press Tab to toggle minimap, aim-assistance, and pause state text.

Game control:
-Press U to spawn one more asteroid.
-Press P to pause/unpause.
-Hold T to enter slow mode.
-Press O to run a single frame then pause.
-Press F8 to reset the game.
-Press +/- to cheat (increase/decrease remaining lives).
-Press enter to cheat (clear all enemies on the map).
-Press ESC to return to the main menu or quit. (Press the start button on the Xbox controller)
-Press the space to enter the game from the main menu. (Press the back button on the Xbox controller)