Infinite V-Points
In the first few levels, there are some puzzles that involve hitting three blocks using Sylvia's Replay power. However, don't be too anxious to get past the puzzle yet. If you shoot the blocks with Sylvia's guns, the blocks will toss out V-Point Coins. Keep shooting until you've gotten all the V-Points you want!

Unlock chambers
Unlock the 36 chambers by completing tasks in the game.

Chamber 1 - Defeat first boss
Chamber 4 - defeat first boss

Use the Six Cannon:
To use the Six Cannon in battle or anywhere else, you must have an almost entire bar of VFX (plus the four to five mini-bars). Then, hold Z until it gets to the last two VFX. A cannon will appear and shoot a large beam with the switched character in it. This works well against Bosses.

Silvia attacks:
Switch to Silvia, then do Slo mo and Replay followed by Close up. Then, punch the enemy for three times the damage.

Whenever playing as Silvia transformed, double jump into the air and rapidly press Punch. She will slowly fall to the ground while firing her gun. This is useful when facing multiple enemies.

Get the Blue Cool Kick power up. Then while in battle, use Blue Cool Kick (while in the air, hold Down, and Kick). She will use a diagonal kick, then use Slo-mo, Replay, and Zoom in. This will do a lot of damage. Note: This works well against Bosses.

Reel select:
Successfully complete the game to unlock the Reel select option for that and lower difficulty settings.

V-Rated mode:
Successfully complete the game in Adult mode.

Ultra V-Rated mode:
Successfully complete the game in V-Rated mode.

Fight Ms. Bloody Rachel:
Ms. Bloody Rachel is your big replay against the bosses Big John, Flinty Stone, Camoleon, and Frost Tiger (in that order). There is no big change in their attacks, but their patterns are slightly different and HP is much higher. They are also yellow now.

Fire Leo and Frost Tiger:
Not only are Fire Leo (one of the Bosses from the original Viewtiful Joe) and Frost Tiger brothers and look alike, but they fight exactly the same except that Fire Leo goes in lava to get his aura back, while Frost Tiger grows his aura.

Reel 4: Lighting torches:
In Reel 4, there are three torch stands that need to be lit towards the end of Scene 1. To do this, you must flare up as Joe using Mach Speed then switch to Sylvia. By switching, you will transfer the fire to Sylvia. Activate Replay and attack with something that will activate the Replay action. There is another set of six not too far from there. You must flare up as Joe, switch, and Replay/Zoom/Spin Kick to light them.

Slo Mo saves:
Use Slo Mo when enemies are about to attack you.