Matthew Duggan has been busy adapting No Remorse to ScummVM. That has proven to not be enough as they just recently added No Regret to the to-do list. Initial progress so far has the game running, albeit with some pretty funny bugs like the alarm blaring and never stopping.
Matthew has expressed interest in merging pull requests from other curious developers. If you wish to help out, please check out the thread on the forums and the Github repositories below. It is a great time to be a Crusader fan.