Complete all Plane Challenge missions
[Single Player] Beat the Plane Challenge mission set from the Single Player menu.
Mission 1 – Shortage of Reinforcements
You can set your supporting craft to target aircraft while you hop back to your primary plane and strafe the ships. Try to stay high except when diving to strafe to avoid flak. Pretty straightforward mission.
Mission 2 – Saving Tulagi
Bombers will mob you from the south, so send all your fighters as far south as you can keep them. If flying them personally rather than controlling from the tactical screen, aim for engines. When the air attack is over, put bombs on everything and destroy the incoming ships. Similar to the Lombok mission in many ways, although from the Japanese perspective.
Mission 3 – Attack on Force Z
Take out both destroyers first with dive bombers. You will need to zoom in on the tactical map to select the destroyers as they don’t typically show up on the tactical map at the default zoom settings. When they are down, dive bomb the carrier and then set 5-6 fighters to take out any of the carrier’s fighters still in the air while you launch bombers loaded with torpedoes. Focus on one battleship at a time and set your bomber groups far enough apart that you can manually fly them in and launch because the computer sucks at hitting them in this mission. Launch the torpedoes at about 0.2 distance and then crash your plane into the BB for additional damage. You have enough bombers that you can crash your whole flight and it lets you launch your next wave much sooner.