Sigh. Starts out okay, but then you run into endless waves of enemies who can stunlock you indefinitely and are uninterruptable, and the game becomes utterly pointless and skill-free.
Sigh. Yet another game that relies mainly on random chance. The early game consists mostly of waiting around and hoping that your guys remember how to shoot their weapons before the enemy does. The mid game costs of hoping that the enemy doesn't suddenly begin a random grenade barrage before you get defenses up, and then in the end you're finally overwhelmed through sheer numbers.
Random is not strategy. Random is not fun.