bwahaha It's 3 am and I was bored enough to hunt through the keen 6 v1.5 exe to find the addresses needed to make it work with ckpatch
There's even an example patch that removes the creature question for versions 1.0 through 1.5. Oh it's based on the unofficial 0.10.0 by the way.
ckpatch-0.11.0.zip
ckpatch-0.11.0-src.zip
EDIT: oops link was wrong
EDIT2: uploaded source and found workaround for the original compressed keen6.exe