Naval Bonus Expert

To get this achievement you need to send your fleet on the missions with the Stars. These can give bonuses in certain area's of your naval map which can increase XP gain and Apexis Crystals for certain amount of time or even give increase in chance of successfully completing missions in that area (i leave that bonus until there is a mission with expert captain or a rare naval mission that i need to complete most of the time). There is currently only one up at any given time on my naval map when it spawns.

Note that these are much more rare than most other mission types, so make sure you always do all of them even if the bonus is useless to you. The total time the meta achievement takes is limited by the time it takes for all the blockade missions to appear, and you can ignore most combat, training and treasure missions and still have those achievements long before you're done with the siege missions, but the bonus mission achievement require some degree of commitment.

Thank you for pointing out which symbols they are. I'm dumb :3