The mapping is topnotch, high quality, just the thing you'd expect from a Half-life mod/map.
Nothing terrible anyway, still could get rid of em with just a bit of tacticool work. I felt the human grunts were kind of persistent tho, like they were almost the hardest to defeat, at some cases felt they just consume my bullets without loosing HP. They posed reasonable threat according to their position in the tier list. Also helped the case enemies weren't high HP bullet sponges to 'give you challenge' like how newbie or even veteran mappers wish to do. Took a while till getting the assault rifle, but alone with the pistol was enough to clear out my way.
Plus you can feel your guns can kill enemies. The fact it uses custom guns and not the awful default ones with equally awful sounds, already give it a point boost.