Misdirect him.

A look of desperation comes into the man's eyes. "I'll never make it!", he moans.

He glances quickly over his shoulder, then thrusts the painting into your arms. "You - you take it", he stammers. "I'll try distract them. Get it to Aveugle.".

With that, he limps off into the gloom.

You can:

Chase after him. He has a bad leg, he can't have got far.

Try to find some light so you can take a look at the painting.

Place the painting on the ground and abandon it.

Run like hell in the opposite direction.

You can distinctly hear the sound of people running nearby. They seem to be getting closer...