Your random generator is awesome; unfortunately it creates some rather impossible combinations, like a bomb in front of a window jump. Best strategy seem to be tripping over enough to keep your speed down.
4/5 - There are some mob noncollision issues with walls, there seems to be a lot of variance in actual game speed (i.e. "lag"), and gameplay can be made more appealing by rebalancing the item costs. Great concept, pretty well executed.