Unlockable: Characters
Perform the actions below to unlock the desired character(s). Note: You can unlock characters on any difficulty, so set it to "Easiest," with 1 round and infinite time if you are having problems. You cannot use continues.

Cammy - Beat Arcade Mode with Crimson Viper.
Fei Long - Beat Arcade Mode with Abel.
Gen - Beat Arcade Mode with Chun Li.
Rose - Beat Arcade Mode with M. Bison (Dictator).
Sakura - Beat Arcade Mode with Ryu.
Dan - Beat Arcade Mode with Sakura.
Akuma - First, unlock Cammy, Fei Long, Gen, Rose, Sakura, and Dan. Start up another Arcade Mode, get 2 or more Perfect Rounds, and exactly 2 Ultra Combo Finishes. Beat Akuma when he challenges you.
Gouken - First, you must have all the unlockable characters unlocked that are available up to this point, including Akuma (Note: you may need to beat Arcade mode with Akuma once first, too). Restart Arcade Mode with Akuma and get at least 3 Ultra Combo Finishes and 2 Perfect Rounds. Gouken will challenge you. Win the match to unlock him.
Seth - Clear arcade mode with all the characters (including Akuma and Gouken). If you managed to unlock Seth with different criteria, it might be a bug (but the unlock is still valid for your profile).

Additions by Latnok, MARUCKIS, optics, Bamb0, sodaboy581, Charles

Submitted by CJ_Master
Unlockable: Colors, Taunts and Titles
Complete the following challenges once with any character to unlock the following rewards:

Beat Time Attack(Normal)1 - Color 3
Beat Time Attack(Normal)2 - Personal Action 2
Beat Time Attack(Normal)3 - Title
Beat Time Attack(Normal)4 - Title
Beat Time Attack(Normal)5 - Title
Beat Time Attack(Normal)6 - Color 5
Beat Time Attack(Normal)7 - Personal Action 4
Beat Time Attack(Normal)8 - Title
Beat Time Attack(Normal)9 - Title
Beat Time Attack(Normal)10 - Title
Beat Time Attack(Normal)11 - Color 7
Beat Time Attack(Normal)12 - Personal Action 6
Beat Time Attack(Normal)13 - Title
Beat Time Attack(Normal)14 - Title
Beat Time Attack(Normal)15 - Title
Beat Time Attack(Normal)16 - Color 9
Beat Time Attack(Normal)17 - Personal Action 8
Beat Time Attack(Normal)18 - Title
Beat Time Attack(Normal)19 - Title
Beat Time Attack(Normal)20 - Title
Beat Time Attack(Hard)1 - Title
Beat Time Attack(Hard)2 - ?
Beat Time Attack(Hard)3 - ?
Beat Time Attack(Hard)4 - ?
Beat Time Attack(Hard)5 - ?
Beat Survival(Normal)1 - Color 4
Beat Survival(Normal)2 - Personal Action 3
Beat Survival(Normal)3 - Title
Beat Survival(Normal)4 - Title
Beat Survival(Normal)5 - Title
Beat Survival(Normal)6 - Color 6
Beat Survival(Normal)7 - Personal Action 5
Beat Survival(Normal)8 - Title
Beat Survival(Normal)9 - Title
Beat Survival(Normal)10 - Title
Beat Survival(Normal)11 - Color 8
Beat Survival(Normal)12 - Personal Action 7
Beat Survival(Normal)13 - Title
Beat Survival(Normal)14 - Title
Beat Survival(Normal)15 - Title
Beat Survival(Normal)16 - Color 10
Beat Survival(Normal)17 - Personal Action 9
Beat Survival(Normal)18 - Title
Beat Survival(Normal)19 - Title
Beat Survival(Normal)20 - Title
Beat Survival(Hard)1 - Title
Beat Survival(Hard)2 - Title
Beat Survival(Hard)3 - Title
Beat Survival(Hard)4 - Title
Beat Survival(Hard)5 - Personal Action 9