Think Fast, Move Fast !

This is the story of four little strange friends :
Square, Circle, Triangle and Cross.
Strange friends indeed, as they can't touch each other, otherwise they explode (but that's another story).

One day, they decided to visit an haunted castle, but they lost themselves into an underground labyrinth.
Help this creatures to exit together.

But be aware : the way to the exit is strewed with dangers and your creatures must not meet each other !