back against the wall
see back to the wall.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
Examples from the Web for back against the wall
Historical Examples of back against the wall
There were no back-against-the-wall poses in Dicky's theory of wooing.Cabbages and Kings