Here is the full list of all 20 Shikhondo - Soul Eater trophies - there are 5 bronze, 5 silver, 9 gold and 1 platinum.
Complete Arcade Mode with 'The Girl' on any difficulty. (continues are allowed)
Complete Stage 5 on any difficulty.
Complete Stage 4 on any difficulty.
Complete Stage 3 on any difficulty.
Complete Stage 2 on any difficulty.
Complete Stage 1 on any difficulty.
Use a bomb for the first time.
Activate Soul Collect mode for the first time.
I won the first fight.
All Trophies collected.
Collect Soul Count of 30,000.
Post a high score to the leaderboards for the first time.
Complete Arcade Mode with 'Grim Reaper' on any difficulty. (continues are allowed)
Complete Local Coop Mode on any difficulty. (continues are allowed)
Complete Boss Rush Mode on any difficulty. (continues are allowed)
Complete Arcade Mode on any difficulty. (no continues)
Complete All Stages on Easy Mode. (no continues)
Complete All Stages on Normal Mode. (no continues)
Complete Local Coop Mode on Easy mode. (no continues)
Complete Local Coop Mode on Normal mode. (no continues)