http://www.newgrounds.com/portal/view/593277

(I dk if number of points is correct, NG doesnt show medal value of secret medals to me)

Secret medals:
Fun + Mono - Visit their Facebook page
How to play - Click on How to Play
What the... - Let the intro play
Yay! - Complete a song
Axel, Jayla, Sammy, Trace, Violet - Play as these characters to unlock respective medals
Submit - Submit your pathetic Highscore
Drunked - Play as Drunk Axel (look on bottom of post)

Insta medals: (use EMPTY save file before using these, otherwise they will NOT work)

Superbia:
96 05 00 07 57 1b 00 00 67 96 02 00 08 00 1c 96 02 00 08 18 4e 96 05 00 07 df 15 00 00 67

96 05 00 07 00 00 00 00 49 96 02 00 08 00 1c 96 02 00 08 18 4e 96 05 00 07 00 00 00 00 49

Invidia:
96 05 00 07 c7 32 00 00 67 96 02 00 08 00 1c 96 02 00 08 15 4e 96 05 00 07 df 15 00 00 67

96 05 00 07 00 00 00 00 49 96 02 00 08 00 1c 96 02 00 08 15 4e 96 05 00 07 00 00 00 00 49

Ira:
96 05 00 07 57 1b 00 00 67 96 02 00 08 00 1c 96 02 00 08 12 4e 96 05 00 07 3b 0f 00 00 67

96 05 00 07 00 00 00 00 49 96 02 00 08 00 1c 96 02 00 08 12 4e 96 05 00 07 00 00 00 00 49

Acedia:

96 05 00 07 b7 24 00 00 67 96 02 00 08 00 1c 96 02 00 08 0f 4e 96 05 00 07 e7 03 00 00 67

96 05 00 07 00 00 00 00 49 96 02 00 08 00 1c 96 02 00 08 0f 4e 96 05 00 07 00 00 00 00 49

Gullia:
96 05 00 07 ea 2d 00 00 67 96 02 00 08 00 1c 96 02 00 08 09 4e 96 05 00 07 d4 39 00 00 67

96 05 00 07 00 00 00 00 49 96 02 00 08 00 1c 96 02 00 08 09 4e 96 05 00 07 00 00 00 00 49

Luxuria:
96 05 00 07 9b 45 00 00 67 96 02 00 08 00 1c 96 02 00 08 02 4e 96 05 00 07 cb 42 00 00 67

96 05 00 07 00 00 00 00 49 96 02 00 08 00 1c 96 02 00 08 02 4e 96 05 00 07 00 00 00 00 49

After Luxuria, play any songs and choose rightmost character, it will be unlocked