Bronze

Endless, Schmendless
Last 10 minutes in single player Endless Mode on any difficulty

There’s always tomorrow Flo
Lose all your stars in Endless Mode on any difficulty

Now we’re cookin’!
Earn Five Stars over the course of Flo’s career (any difficulty)

That’s what I call an upgrade!
Unlock the full version of Diner Dash®

That’s what I call team work!
Win 10 Team Dash Games! 

There’s no time like the present
Win 10 Online Time Wars Games!

Here’s a tip for you…
Win 10 Online Tip Wars Games!

Will Flo please stand up?!
Win 10 1v1 Head to Head Games!

Silver

“I ate the whole thing!”
Complete all four restaurants in Flo's career

Workin’ nine to five…
Win 20 Team Dash Games with at least three other teams

Secret

? ? ?
Unknown

Source