On a level (not sure, game froze, more into this in a second), the one where you first introduce levers, I was jumping my miner (2, if that means anything) to get to the door, and he double jumped(I guess, I havent learned that yet) and flew into the ceiling. My game froze and he never reappeared. Is this a bug?
I don't know if anyone else noticed, but you don't need arrows. The platforms are rectangles, with small 2 or 3 square portions jutting out as the entrances and exits to each platform. It would be nice to have them more obviously placed, but you don't need to blindly search.
Otherwise, what everyone else says; sometimes a little too grindy, needs to be more just mouse, or just keyboard, needs to have semi-obscure items so that you can see through them, and my own addition: be able to walk through shallow water.
Once you figure out which way you are going on lvl 50, its much easier.
Would people please stop rating it lower just because you can't do it? Its quite frustrating.
5/5 it kept me hooked until I was done.
Level 50 is impossible! Well... not really. Just really hard.
Love the game. Hopefully there is a sequel :) Just keep it this simple and i'll be happy.
5/5
hahaha for junkyard, I used the not conventional method
http://FantasticContraption.com/?designId=3798477
;) I was having fun finding different ways to do levels
 "Toss the Turtle"){kind=icon}
 "Best Friends Forever 3"){kind=icon}
 "Cover Orange"){kind=icon}
 "Castaway"){kind=icon}
 "Run"){kind=icon}
 "Monochrome II"){kind=icon}
 "Greg Can Jump!"){kind=icon}
 "Bunni: How we first met"){kind=icon}
 "GeoSketch"){kind=icon}
 "Super Stacker"){kind=icon}
 "Simple Life II"){kind=icon}
 "Factory Balls 2"){kind=icon}
 "Gateway II"){kind=icon}
 "Fantastic Contraption"){kind=icon}
 "Mousewheel Speedtest 08"){kind=icon}
 "Monochrome"){kind=icon}