To land a clean 540 double flip in Tony Hawk's game, ensure you have a high skill level and a good board setup. Approach the ramp with enough speed, then perform a strong ollie while simultaneously rotating your character 540 degrees and flipping the board twice. Timing is crucial; initiate the flip as you reach the peak of your jump. Finally, focus on landing with your weight centered to maintain balance and avoid bailing.
Im guessing the 900
You can look in the trick guide under flip tricks
Rodne mullen came up with almost all our flip tricks today, tony is only famous from being able to land a 900, Rodne is the king of street and tony is king of vert
To perform a sticker slap in Tony Hawk's Underground 2, you need to be in a grind. While grinding, press the appropriate button for your trick (usually the grab button) and then quickly press the button for the flip trick. Timing is essential, so make sure to execute the flip trick just as you come off the grind to successfully land the sticker slap.
double back flip
Flip That House - 2005 Tony Skeeters was released on: USA: 2008
Flip That House - 2005 Toby and Tony was released on: USA: 2008
Hard double flip
twice as much as a flip
good
Flip or Flop - 2013 Double Trouble Flip 1-5 was released on: USA: April 2013
Tony Hawk first landed the 900 in 1999. ---- Tony Hawk first landed the 900 in 1999 true... but he did it in the X games in front of thousands of people which made it even cooler... ---- He landed it in 1999 at the X Games but he did it after the bell rang to end his run. Then he landed it again in 2001 in competition.