Rubber Ducky and the Rainbow Gun achievements

You've defeated the derpy brother and unlocked a message from the developer. . .

Get below 8:00 in speed run mode.

Play with Death Epileptic Pixel mode on. (There's also a game of the same name)

I told you to go right, didn't I. . .?

Looks like someone just likes firing the Rainbow Gun. . .

It's there, it's unique! Just look closely!

Unlock all the levels!

Convince/bother/bribe the dev until everyone gets this achievement.

Well, it's sorta' in the level. . .

Everyone knows it's the best part!

Type the 2nd section of the dialog from the 6th level backwards into the cheat code selector! Don't forget to puncuate and capitalize properly!

. . . or it would have been, anyway!