Shockingly good expansion that is on par with the quality of the original Quake II campaign. The levels all have unique designs to them, for a large expansion like this it helps keep you engaged since you'll just keep seeing new stuff every level you enter. The updated lighting of the KEX Engine really shines since the levels make use of techniques the original engine probably couldn't do. Enemy encounters are really frantic and fun, very creative in how they use encounters to either make you feel vulnerable or powerful when you use the powerup you've been storing. The weakest part of the expansion is the bosses, since the final boss fight especially is really frustrating due to lack of cover and lots of enemies spawning in.