Easily done in the Prologue. Find two buildings with a gap in between them. Run and jump towards one with
, then with
. Jump with
and you'll hit the parallel wall and immediately wallclimb. Press
to turn again, then jump off with
.
Jump towards wall (
) > turn 180 degrees (
) > jump (
) > wallclimb (automatic) > turn 180 degrees (
) > jump (
).