Here is the full list of all 16 Air Conflicts: Pacific Carriers achievements.
Perform 3 kills in row in MP
Complete both IJN Campaigns
Complete both USN Campaigns
Sink 5 destroyers in campaign game mode
Sink a carrier in campaign game mode
Hit a moving ship with a torpedo
Hit a manoeuvring ship with a torpedo
Successfully land on carrier at mission’s end
Reach maximum experience with any pilot (255)
Sink 20 ships in campaign mode
Shoot down 100 enemy planes in campaign mode
Place in top half in multiplayer match with at least 6 players
Place first in multiplayer match with at least 6 players
Play 15 multiplayer matches to the end
Win 5 multiplayer matches with USN team
Win 5 multiplayer matches with IJN team