For schranze, just compress to death.
You could combine with bit reduction, ringmodulation, distortion, fuzz, whatever, to make it even more crunchy if you want.

Personally I would split some sounds out of the whole distorted compressed channels and have some sounds cleaner with more punch, and then add extra pump at the mastering stage, but I`m old school, and I like to hear the sounds I put into a mix, rather than pumping noise.