[list] [*]Added Champion enemies, which drop keys when defeated [list] [*]Red - Triple health [*]Orange - Triple shot [*]Yellow - Shoots twice as often [*]Green - Fast bullets [*]Blue - Moves every turn [*]Indigo - Explosive shots, explodes on death [*]Violet - Homing shots [*]Pink - Bouncy bullets [/list] [*]Added Champion items [*]Added 4 Upgrades [list] [*]Lightning in a Bottle [*]Bloody Disc [*]The Large Stone [*]Random Spread [/list] [*]Items & Upgrades menus now track your completion [*]Added an icon showing your difficulty level to the HUD [/list]