Looking for a HL2/CS:S Mod Thread

Way back when, about 5 years ago, there was this mod I used to play all the time. It was a HL2 mod that added in the CS:S maps, albeit with a few changes and some custom maps sprinkled in, and basically had missions for each map, some I remember being hostage rescue and missions where the objective was to kill every enemy in the premises. It used some SMod assets as well. I'm 90% sure it wasn't SMod Tactical like some may assume, as the screenshots look nothing like what I remember, nor the gameplay, although I have played that mod many times as well. I can't give a really detailed explanation because I only remember bits and pieces of the game, but I hope it's enough to at least steer some suggestions my way. Thank you for your time.