This mod is bad. I would give it half a star, but I do think it has some redeeming qualities: the new UI and weapon models are clearly quite high effort and do look very good. The biggest problem with this mod is the fact that there are NO breaks, it is constant combat. Whereas Half-Life is Run Think Shoot Live, Invasion is Shoot Shoot Shoot Shoot. It is absolutely exhausting playing this mod because you never have an inch of breathing room. I didn't finish this mod because I couldn't bring myself to suffer even a minute more of playing it. The least fun Half-Life mod I have played.