Wave System

- A wave system occurs when groups of enemies (waves) are spawned into an area.
- These waves should get incrementally harder in difficulty, and the enemies should increase in number as the number of waves completed increases.
- A wave is completed when all enemies of a certain wave are defeated.
- There should exist many areas where the enemies can spawn, so as to prevent the player from figuring out where these points are, quickly
- The implementer should seek to include all enemy types in the system, and should gradually increase the difficulty of the waves.
- The total number of waves should be set to 10 (subject to change).
- Upon completing a wave, a timer of 60 seconds should start, upon completion of this time, referred to as the "intermission", or if the player presses the enter key during intermission, the next wave should start.
- Upon completing the total number of waves, the player wins the game.