Dark Sector doesn't live up it's concept
When pitted against human opponents, the gun and glaive action plays out pretty well. It plays like a fine cover based shooter with the bonus glaive tossing option. However, a greater portion of the game takes place against bothersome unarmed mutant enemies that attack in waves. Pest control isn't fun, glaive or no glaive.
Dark Sector is a game that shot itself in the foot by it's design direction. It has the pieces to be a consistently good action game, and it is also graphically impressive when you can actually see it. However, the reality is a game that spends too much time in the dark exterminating no thrills monsters.