Thanks so much for helping me with the Cutting Corners Stamp on DK's Crash Course, that one has been driving me nuts trying to get. Any more specifics on Skip 30 Bananas though? Do you have to do it within the first board of the game or, first 2 or all 4?
To get the Double Damsel Stamp in DK you simply have to beat all 4 boards of the game in one run. You can die as many times as you have lives.
Here are a few others I can help with:
Yoshi's Fruit Cart:
5 Egg Exit - Eat enough fruit to produce 5 Eggs and then exit the gate with 5 Eggs
3 Close Calls - If you stray close enough to a pit without falling in you'll notice and exclamation mark appear over Yoshi. Get 3 of them to appear in one level
3 Bee Buffet - Use the Chili to consume 3 Bees during your playthrough. Doesnt have to be 3 Bees all at once
Octopus Dance:
That's A Wrap - Beat all 5 levels
F-Zero Twister Race:
Hang Time - early in the race is a section with rainbow colored boost ramps. Hit the every jump without missing one during one race