I'm sure you get a lot of these but...
The shockers got to the point where it was nearly impossible to do anything. There is at one point in the game where there are four shockers at once. This meant that at some stages my crusher was permanently disabled as I was unable to move it at all. After I beat that, I moved on to the last boss. This fight was barely fucking manageable on its own, never mind the shocker that went off every three seconds. It was absolutely impossible to do anything against him because of this. I don't mind one shocker that goes off infrequently, but four at once that all go off regularly is fucking stupid. Without those shockers this game would have a much higher rating than the 3.30ish rating it has now. The game just becomes frustrating after the first boss due to the shockers, and the last boss becomes almost insurmountable because of this. I recommend either removing the shockers altogether, or making it so they do something less debilitating, like slow down the crusher. I am giving this game a 2/3 because it simply doesn't deserve a 4 or a 5.
SUMMARY: FIX THE FUCKING SHOCKERS.