Here is the full list of all 34 Omen of Sorrow achievements.
Play for at least 5 hrs with 5 different characters.
Collect 10 Titles.
Collect 30 Titles.
Select Your Favorite Characters.
Set Your Online Title.
Play Training Mode for 30 minutes.
Play with the alternate color of each playable character.
Play for at least 5 hours with 1 character.
Play for at least 5 hours with all 11 characters.
Play for at least 20 hours with 1 character.
Play for at least 40 hours.
Play for at least 60 hours.
Play for at least 100 hours.
Complete Survival Mode 12 Matchs.
Complete Survival Mode 60 Matchs.
Complete Survival Mode 120 Matchs.
Complete 10 Online Fights.
Complete 50 Online Fights.
Complete 300 Online Fights.
Win 1 Ranked Match.
Win 10 Ranked Matches.
Win 30 Ranked Matches.
Win 100 Ranked Matches.
Win 300 Ranked Matches.
Beat 10 higher ranked players in ranked matches.
Win 3 Ranked Matches in a row.
Reach Bronze League in Ranked Matches.
Reach Silver League in Ranked Matches.
Reach Golden League in Ranked Matches.
End 300 rounds with EX Moves.
End 300 rounds with a Decimation Move.
Perform 100 Retreats.
Perform 100 Bold Cancels.
Perform 100 Bold Counters.