Brawl Royale (300 points)
http://www.newgrounds.com/portal/view/458245
Pretty pointless game - mash space at the right point to win! All the characters come from the authors other anime over-obsessed games...
Most of the medals are for winning the specific round.
Due to the way the game is written (all using animation frames), it's difficult to do an good covering cheat. What does work well is to set speed-hack to 0.2 and you should win all the levels with no hassle.
Some medal specific ones:
Masochist
Get killed by each enemy in one sitting, 50 points.
The below changes it so only one death is needed:
1c 96 05 00 07 0a 00 00 00 48 =>
1c 96 05 00 07 01 00 00 00 48
Cool Story Bro (secret medal)
Kill your best friend, 10 points.
Select 2 player from the menu, win one round!