Observe the turret's line of fire and adjust its directionality before pressing the Fire button to launch the presently-loaded cannonball at the foe. You can actively switch the shot type currently loaded before firing.
Tip #3
In every battle, you will have a fixed number of shot types and fixed amount of ammunition. You must observe the traits of the monster waves and their formation, and select appropriate strategies to fire at them. If you hit 0 ammunition before the battle ends, the battle will end prematurely.
Tip #4
You can learn about the shot types and ammunition counts before combat begins, as well as the types of monsters you are facing and their traits.
Nymph's dream, with Candace on Noblesse as core team I think, and as weapon Jade Cutter is probably...