The goal of Half-Life 2 : MMod is to enhance and expand gunplay, combat mechanics and the immersion factor by giving the Player more options and combat opportunities as well as refine how the Player handles his arsenal. Half-Life 2 : MMod also offers minor AI enhancements, extended abilities for combine soldiers, multiple bug fixes, enhanced visuals, VFX re-design, sound redesign and much much more, while keeping nearly every new feature in the mod totally optional.
This compatibility patch will allow you to play through Two Rooms with the revisions gameplay and visuals enhancements that Half-Life 2: MMod has to offer.
Just a clarification, i'm not going to do the comps after this one, cause they use MapBase and we all know if i tried it was gonna break.
all we can do is hope mmod becomes open source someday