Hey Davidaellis,
I own a MiniBrute 2s and you can patch it to external modules easily using the patchbay indeed. Both VCO1 and VCO2 have outputs you could send to your reverb module. You can return it back using the master or ext inputs, master will mix your input to the final audio signal from the MiniBrute, the ext input will send your signal through the MiniBrute's filter, envelopes, brute factor and everything else, this can be controlled with the ext fader in the VCO1 section.
The MiniBrute's manual is pretty easy to follow and there's a full section on the patchbay, you may want to check it out.
Have fun.