After completing all the trophies this trophy will unlock.
Most Time Consuming/Difficult Trophy:
DOA5 Ultimate Is My Life: (Requires 100 matches. Matches are hard to find & therefore you're recommended to boost with a friend)
Most Skill Dependent Trophies:
Exercise Newbie: (Requires you to complete one characters entire move list)
A Fighter is Born: (Requires you to complete all the tutorial exercises)
Unchallenged Champion: (Similar to "Exercise Newbie" in a sense. You're required to complete one characters combo challenge)
The rest of trophies in the game are quite easy.