This mod overwrites player movement from standard walk/run/sprint mechanism to mine -walk_slow/walk_fast/run. Also disables sneak runnig, although you have an option to sneak even slower(what mekes you harder to detect from what I remember).

It's the very first version and it's not completed yet. I still need to replace animatinon for my run from standard vanilla sprint animation (I would be very greatful, if sombody lend me a hand here).