no, there are four kicks -> *spoilers*: the kick out of limbo (fischer, ariadne, saito, cobb); the kick out of the mountain (eame's dream); the kick out of hotel world (arthur); the kick out of the city (yusef). but there does need to be a key with this graphic: what the heck are the plus signs representing, anyway?
the idea of it being a penrose stair is a nice touch, though.