Here is the full list of all 49 SOULCALIBUR VI achievements. It takes around 30-35 hours to unlock all of the achievements on Windows.
Fight 30 battles online.
Win five ranked matches.
Play a ranked match.
Knock your opponent out of the ring 20 times. (Must be outside of Training mode.)
Upgrade a weapon in Libra of Soul.
Complete the mission "On the Road" in Libra of Soul.
Land 20 guard impacts. (Must be outside of Training mode.)
Land 10 lethal hits. (Must be outside of Training mode.)
Stop five guard impacts or reversal edges with a break attack. (Must be outside of Training mode.)
Complete Arcade mode for the first time.
Win 30 reversal edge clashes using A, B, or K. (Must be outside of Training mode.)
Complete the main story of Soul Chronicle.
Land 20 critical edges. (Must be outside of Training mode.)
Achieve 15 perfect victories. (Must be outside of Training mode.)
Complete 10 secondary missions in Libra of Soul.
Raise the level of a town by one in Libra of Soul.
Complete one secondary mission in Libra of Soul.
Complete the mission "The Man in Black" in Libra of Soul.
Complete the mission "The Astral Fissure" in Libra of Soul.
Obtained all achievements.
Complete one character's story in Soul Chronicle. (Base-game characters only.)
Complete 10 characters' stories in Soul Chronicle. (Base-game characters only.)
Complete 20 characters' stories in Soul Chronicle. (Base-game characters only.)
Complete the mission "Death or Glory" in Libra of Soul.
Complete the mission "The Journey's End" in Libra of Soul.
Complete the main story of Libra of Soul with the scales tipped towards good.
Complete the main story of Libra of Soul with the scales tipped towards evil.
Use a mercenary in Libra of Soul.
Eat some food in Libra of Soul.
Complete the mission "Footsteps: Fortress of Illusion" in Libra of Soul.
Obtain 50 weapons in Libra of Soul.
Obtain 100 weapons in Libra of Soul.
Upgrade weapons 30 times in Libra of Soul.
Raise the level of four towns in Libra of Soul to their max.
Complete 30 "Astral Fissure Sealing" missions in Libra of Soul.
Travel a total distance equal to three trips around the Earth while exploring in Libra of Soul.
Reach level 50 in Libra of Soul.
Defeat an Ancient in Libra of Soul.
Use Soul Points to unlock 10 entries in the Museum.
Turn on standby and get matched with another player while in Training mode.
Get a gold rating in Arcade mode.
Unlock Legendary difficulty in Arcade mode.
Win five casual matches.
Fight 10 matches online with a character made in Character Creation.
Fight 50 battles online.
Perform soul charge techniques 20 times. (Must be outside of Training mode.)
Break all your opponent's equipment five times. (Must be outside of Training mode.)
Land three lethal hits with Astaroth using "Rending Torment." (Must be outside of Training mode.)
Perform "Steed of the Night" with Grøh 10 times. (Must be outside of Training mode.)