Walk on uneven terrain:
You can raise and rotate the footsteps to create the illusion of walking on
uneven terrain.
1 Make sure that Footstep mode is still on.2 Maximize the Perspective viewport.3 Use Select And Rotate to select all the footsteps from 4 on.4 Use the Transform gizmo arrows to rotate the selected footsteps
approximately – 15 degrees about the X-axis so the footsteps go up a hill.5 Select footsteps 8 through 11.6 Rotate the selected footsteps about the X-axis approximately 21 degrees,
so that the footsteps go back down the hill.7 Select footstep 11. Rotate it so it’s parallel with the grid.8 Play the animation.
The biped’s feet follow the footstep placement.Modifying Footsteps | 739