You need not tip a shape all the way. If you just want to shift some balls, you can tap left and right to shake the shape in question.
Corners
You can only turn shapes by running up to the corners, but bear in mind that Kribl can only drop down from a short height, so you need to manipulate the shape so that steep drops are not a factor.
Spikes
As the levels pass, it is not only spiky balls and blocks you need look out for. Jumps and walls of spikes are also a factor.
