Where Armstrong lacks in power, it makes up in speed and diversity of attacks. It is one of the fastest moving bosses in the game, and most of its attacks come with very little notice. Even though Tida has one of the widest areas in the game for its boss fight, Armstrong will very quickly close in on the caravanners. While it is not as difficult as the rest of the level might suggest it to be or when compared to later bosses, it is a good deal more difficult than bosses that precede it.