Here is the full list of all 60 Man O' War: Corsair - there are Warhammer Naval Battles achievements.
Sink a Galleon.
Recruit an Amethyst Wizard.
Slay 5 sea monsters.
Sink 200 ships.
Sink a Hell-hammer.
Recruit a Light Wizard.
Sink a Plaguecrusher.
Sink 10 Dark Elf vessels.
Recruit a Jade Wizard.
Recruit a Grey Wizard.
Sink 10 Skaven vessels.
Sink an Ironclad.
Recruit a Celestial Wizard.
Sink a Dragonship.
Recruit an Amber Wizard.
Sink an Eagleship.
Sink a Plagueship.
Sink a Deathburner.
Sink a Warp-raider.
Sink 10 Orc vessels.
Send a Bane Tower of Tzeentch back to the Warp.
Sink a Death Fortress.
Sink a Doombringer.
Sink a Doomreaver.
Sink 50 ships.
Sink a Hellrammer.
Send a Great Winged Terror back to the Warp.
Sink 10 pirate vessels.
Sink a Greatship.
Sink 10 Chaos vessels.
Recruit a Gold Wizard.
Sink 20 ships.
Sink an Ironshark.
Sink a Hellship.
Sink a Wolfship.
Sink a Drillakilla.
Sink a Buccaneer.
Sink a Bloodship.
Sink a Wargalley.
Sink a Deathgalley.
Sink a Corsair.
Sink a Bigchukka.
Sink a Hulk.
Sink 10 Dwarf vessels.
Sink 10 High Elf vessels.
Sink 10 Empire vessels.
Sink 10 Estalian vessels.
Sink 10 Kislevite vessels.
Sink 10 Tilean vessels.
Recruit wizards from all eight Colleges of Magic.
Recruit a Bright Wizard.
Slay 50 sea monsters.
Sink 1000 ships.
Sink a Dreadnought.
Sink a Hawkship.
Sink a Hellslicer.
Sink an Ironfist.
Sink a Monitor.
Sink a Nautilus.
Visit every non-pirate port in a single campaign.