Demo Day 42

Demo Day 42 is here! This is my entry for demo day. I incorporated some feedback from friends/family, as well as the /agdg/ community. Thank you to everyone who left feedback!

Changelog:

• Added shotgun sprite to player
• Added kickback to shotgun
• Turrets can no longer shoot you from off-screen
• Turrets shooter slower, and fewer bullets to make them less bullshit
• Moved some stuff around in the levels
• Added a how-to page in the main menu
• Added some death messages (Things say things when they die)
• Added Eastermen (little pink guys that jump at you in the spike pits)