Decreased spawn rates of the enemies as it was a bit too hard.

The enemies were spawning a bit too fast in the game, so it was difficult to properly level up and upgrade your weapons before you get overwhelmed. 

The spawn rates are done every x number of metres. I changed the following spawn rates:

Yellow Dragoons (Basic Type) : 300 m to 500 m

Blue Dragoons (Shooting Type) : 500 m to 888 mm

Road Blockades: 400 m to 950 m

Tomato Dragoons (Following Type) : 500 m to 1000 m