Fix for level achievements — Adrift in the Backrooms Steam update #1562707

Fixed problem with level achievements and level completed textsMade leaving chests possible by pressing tabReduced the initial amount of running needed in level 8Changed level 8 special achievementSome Lighting changes to level 9Changed the final note in level 9Added new item: CookieCookie increases stamina regeneration and reduces stamina depletion while runningEating multiple cookies extends the effect durationCookies can be found from chests and lockers and also from achievement rooms