Brave New World 
Participate in any mode online.
This trophy will unlock after you first match online whether you win or lose.
Hellbent 
Participate in 100 matches online.
Please refer to
Forged From Steel for more information.
Dreaded Opponent 
Participate in 200 matches online.
Please refer to
Forged From Steel for more information.
Forged From Steel 
Participate in 300 matches online.
For this trophy you must play 300 ranked or player matches online, win or lose. So long as the match finishes all the way through it will counter towards this trophy. If you do not obtain this trophy after getting
Mega Good and
Fighting Machine then refer to
Rivals Welcome for a good method to grind out the rest of your online matches with little to no effort.
If you are having trouble with this trophy need to look for a boosting partner please refer to the
Trophy Boosting thread
Full Roster 
Battle against all characters online.
For this trophy you must play against the full 48 character cast at least once online. Here is a complete list of the original cast of characters:
Marvel- Captain America
- Deadpool
- Doctor Doom
- Dormammu
- Hulk
- Iron Man
- Magneto
- M.O.D.O.K
- Phoenix
- She-Hulk
- Spider-man
- Storm
- Super-Skrull
- Thor
- Wolverine
- X-23
- Sentinel
- Taskmaster
Capcom- Amaterasu
- Arthur
- Chris Redfield
- Chun-Li
- C.Viper
- Dante
- Felicia
- Haggar
- Morigan
- Ryu
- Spencer
- Trish
- Tron
- Wesker
- Viewtiful Joe
- Zero
- Akuma
- Hsien-ko
Now added to this list you must now play against the new 12 characters which are as follows:
Marvel:
- Dr. Strange
- Ghost Rider
- Hawkeye
- Iron Fist
- Nova
- Rocket Raccoon
Capcom- Firebrand
- Frank West
- Nemesis
- Phoenix Wright
- Strider Hiryu
- Vergil
If you are having trouble with this trophy need to look for a boosting partner please refer to the
Trophy Boosting thread
Incredible 
Win without calling your partners or switching out in an online match.
To unlock this trophy you basically want to avoid using

or

to call in your assist. In the previous game you could easily achieve this in Arcade mode however it has now been made online specific. With the amount of experienced players in ranked matches it may be best to boost this with a friend.
If you are having trouble with this trophy need to look for a boosting partner please refer to the
Trophy Boosting thread
Need a Healing Factor 
Win without blocking in an online match.
In a match you hold either

to block low or

to block high when you are getting attacked. In the previous game you could also earn this through Arcade mode but now it has been made online specific. Blocking is almost required online with the amount of experienced players and spamming that go on in ranked matches. Boosting this would be much more recommended.
If you are having trouble with this trophy need to look for a boosting partner please refer to the
Trophy Boosting thread
Crazy Good 
Surpass the rank of Fighter.
Please refer to
Mega Good for more information.
Mega Good 
Surpass the 6th rank of any class.
This trophy will unlock once you reach the 6th rank of any class in online ranked. When playing online your in-game statistics determine the rank class you are given after you have surpassed the rank of a Fighter. The statistics are divided the same way they are in Arcade Mode:
- Stability
- Basic Offense
- Basic Defense
- Advanced Offense
- Advanced Defense
However Stability stands for overall balance between your offenses and defenses, here are the types of ranks for each statistic:
- Lord (Stability)
- Ranger (Basic Offense)
- Guard (Basic Defense)
- Scout (Advanced Offense)
- Judge (Advanced Defense)
Depending on what you excel in you will be given that rank type, most players usually fall under the ranking of a Lord. Players rank up depending on how well they do in their matches, different factors such as your win streak influence the amount of extra points you get which is why some players reach a high rank with a lower amount of wins then another player and you earn extra points when beating someone of a higher rank however if you lose to some of a fighter rank after you reach the 9th rank you will lose points. This trophy may take a while depending on your skill level as a player, for more information to better your game please refer to
Fighting Machine.
Hotshot 
Win 10 battles in Ranked Match.
Please refer to
Fighting Machine for more information.
Slam Master 
Win 50 battles in Ranked Match.
Please refer to
Fighting Machine for more information.