Fixed problem with level achievements and level completed texts
Made leaving chests possible by pressing tab
Reduced the initial amount of running needed in level 8
Changed level 8 special achievement
Some Lighting changes to level 9
Changed the final note in level 9
Added new item: Cookie
Cookie increases stamina regeneration and reduces stamina depletion while running
Eating multiple cookies extends the effect duration
Cookies can be found from chests and lockers and also from achievement rooms