The Bavarium Sea Heist Add-on for Just Cause 3 has 6 achievements.
Defeat 5 enemy helicopters with the Rocket Boat.
Get the Rocket Boat, also known as "The Loochador".
Beat the last mission of the Bavarium Sea Heist expansion and complete the story arc.
Defeat 10 enemy vehicles while in the air with the Rocket Boat.
Defeat 1 enemy helicopter using the eDEN Spark.
Defeat 10 enemies with the same eDEN Spark strike.