the only equation is 7+2, you can go through any doors that are locked if you have one key, the ai sucks, on that topic the ai art sucks, the kid that pushes you is annoying, the droning music would honestly be better if it was muted, the movement sucks, why the HECK are the arrow keys being used, oh yeah the game is so poorly optimized, and finally to top that all off, the game is so unoriginal and unplayable that i just stopped.