Talk:Akashi's Improvement Arsenal/@comment-24864870-20160519183644/@comment-26315106-20160521194231

I'd say, focus on :

-AP shells to +6 (4 should be plenty)

-BB main guns (41cm and 35.6cm, but don't upgrade many different ones at the same time because it consumes a lot of spare guns)

-20.3cm n°3  for CAs (once again 4 should be plenty, especially if you have Prinz)

If you're rich you can also upgrade :

-Quint Torpedoes (for CLT/DD CI)

-Akizuki-class DD guns

I'm not too sure about the opti levels to stop at so I'll let you search yourself but I can tell you you won't regret investing your screws in those equipments.

Oh and don't forget the daily quest screw : one improvement per day will help you save a lot in the long run.