Added a few more enemies

• Changed the menu button prompt from "F" to "ESC"
• Increased shotgun ammo, now it has 14 bullets on the clip!
• Tweaked the difficulty a little bit
• Made a few sound tweaks, so now it should be more comfortable for headphone users
• Added a little light hint to lead to the boss fight room
• Added ending screen
• Increased boss health, from 3300 to 3500

  Come face Satan and his minions on this brand new update, and break the cycle once and for all!