In PROLOGUE, you can gain this Achievement just after the cinema where Faith throws the bag to Celeste, and the cops start chasing Faith again.
To your right side (right after the cinema), there is a yellow and orange building out of which the cops start pouring. Use the yellow wall on this building to begin the wallrun towards the fence. Start the wallrun far back enough so that it gives you room to jump towards (not over) the fence at the end of the run. Hit the top of the fence at the end of your jump, speedvault over it, and you are 27TA (25G) richer.