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Krystal is a combo-heavy character, much like the other Star Fox characters. In addition to being one of the fastest characters in the game in terms of running speed, she is also very powerful. Her tilt attacks are useful to keep opponents away, as well as start combos and even KO at high percentages. Her smash attacks are powerful, with her down smash in particular creating a powerful wave that hits enemies a considerable distance away. Her special moves have strong utility as well, with her side special move, Krystal Rush, being a quick combo starter and horizontal recovery move. Her neutral special move, Sniper Rifle, is a long-ranged projectile with strong knockback that can also be aimed, making it useful for edgeguarding and covering large distances. Her down special move, Grenade, is another effective projectile that can interrupt the opponent's recovery if she manages to throw it with the proper range on the enemy. Her grabs and throws are also among the fastest in the game, and her aerial attacks are very strong as well, with her down aerial being a powerful meteor smash when the sweetspot is landed.
Despite her strong atrributes, Krystal has several weaknesses. In addition to her high falling speed, she is also among the lightest characters in the game, making it easy for Krystal herself to be caught in combos and KO'd early. This is compounded by her recovery, which covers a relatively short distance and is very linear. In addition, her special moves, while powerful, are quite predictable and can leave her vulnerable if she misses, with Sniper Rifle in particular suffering from high startup and ending lag.
Quickly swings her staff forwards, kicks twice while spinning in place, and finishes with a spinning back kick. The first hit pulls opponents into the remainder of the attack, which proves it very reliable.
Plants her staff on the ground and attacks with a twirling kick. It has low endlag, stops all of Krystal's forward momentum, turns her around, and sends opponents backward, making it useful for combos. Can also combo into her forward smash at mid-range percentages.
Does a high jump and slams her staff into the ground, dealing high knockback and creating a massive shockwave that can trip opponents nearby. More knockback is dealt if opponents are hit by Krystal's staff than the shockwave.
Rushes forward with a kick, bouncing off opponents, which she can use to set up combos. In the air, she shoots diagonally downward with a divekick. The aerial version keeps her horizontal momentum, and does not leave her helpless, though it has a sizable amount of lag. It can also be canceled using a ledge to keep her momentum in the air.