Here is the full list of all 30 Assassin's Creed Liberation HD achievements worth 400 gamerscore.
Complete Sequence 1.
Complete Sequence 2.
Complete Sequence 4.
Complete Sequence 6.
Complete Sequence 8.
Complete the game (fake ending).
Kill all Citizen E and experience the true ending.
Achieve 100% Synchronization in all Sequences.
Block 10 shots or firing lines with a human shield.
Collect all diary pages, alligator eggs, Mayan statuettes, and mushrooms.
Collect every persona-specific collectible.
Kill 5 guards in 15 seconds using only the Sugarcane Machete (without using the Chain Kill).
Survive 10 animal encounters.
Buy the maximum number of ships (8).
Tree Run for 10 branches without touching the ground.
Kill an enemy with a poison dart.
Complete all persona-specific side missions.
Kill 25 enemies with the Parasol Gun.
Buy your 1st Dressing Chamber.
Buy every Dressing Chamber.
Pickpocket 5000 écu.
Perform 10 predator moves using the Whip.
Collect all the pocket watches.
Use berserk poison to force an enemy to kill 5 enemies.
Synchronize all viewpoints.
Complete every Business Rivals mission.
Complete every Ship Crew mission.
Complete every Bayou Fever mission.
Complete every Free Slaves mission.
Kill an enemy from a tree, with the blowpipe, while using eagle vision.