Originally posted by: Balloon_Kid
Getting the big diamonds and choosing the correct treasure chest after each world can really make or break your game. Prior to this contest, i didn't know that those items were permanent. If you get the speed up shoes in the chest, you will have them for the rest of that game after every death. That feather that circles your character and kills any enemy that comes into contact with it is also very convenient.
Also, I think I'm finally understanding the item appearence mechanic, at least for the diamonds. Killing enemies with your rainbows will usually net you random point items, but crushing them underneath already formed rainbows, or killing them with a random item like the stars or wands, will increase your chance of obtaining diamonds. Every third enemy you kill also spawns into on of the three standard powerups.
I wasn't to hot on this game to start off with, but now it's growing on me. Pretty roguh difficulty curve though.
Killing enemies with stars, lightning, fairies, or "dropped" rainbows should GUARANTEE a diamond (except for every 3rd enemy that gives a useful item).
So score-wise, once you secure your diamonds, you don't want to do that since the normal items are way more valuable once you get crowns and stuff.
I didn't think the chest-treasures were permanent, though.
I read somewhere that to get the permanent items you had to spell R-A-I-N-B-O-W in order to open a secondary hidden room after the boss. (though i couldn't replicate this myself -- got the right color order but nothing special seemed to happen)