- what drop the chest?
- open door animation ( clickable door - click to open if key)
- improve maze (ennemys / keys)
- multiple perso move?
- level increase for each stuff (stamina, life, weapon use, etc)
- add baril - explosion - droping object (life? stamina? weapon?)
- add open/close doors 
- gui  with graphic heart for life, display current weapon, etc...
- lady to rescue?
- toggle doors + doors animation close(open) when pressing a button
- path = outside, with exterior container + some big/small rocks
- better path (between mazes)
- añadir ventanas?
- add distinct wall mesh for outside walls
- labyrinthe 3d (etages?)
- multi player