Here is the full list of all 12 Samurai Shodown VI trophies - there are 8 bronze, 3 silver and 1 gold.
Clear Arcade mode with every playable character.
Win a round using Earthquake's Skunk Burst skill in Arcade or Survival mode.
Perform a toy transformation in Arcade or Survival mode.
Win a round using a thrown item in Arcade or Survival mode.
Clear Arcade mode with all animal companions.
Score a 10 Slash combination in Arcade or Survival mode.
Edit a Spirit.
Clear Arcade mode with any character.
Win a round in Arcade mode without taking any damage.
Defeat 20 opponents in Survival mode.
Clear Survival mode.
Clear Arcade mode on level 8 without changing any other setting.