This first page of this document is a 12 problem circuit, requiring that students use multiple techniques of factoring, including: GCF factoring, factoring by grouping, difference of squares, sum of cubes, difference of cubes, perfect square factoring, and general trinomial factoring (without reference to the specific technique being used). Additionally, two problems require multiple stage factoring. The second page is an answer key.
I am offering this resource without charge because, though this document is original, I must give credit to Virg Cornelius who first introduced me to them. Though I am quite certain that Virg and others have more extensive factoring circuits on TpT, this "mini resource" could be one additional practice circuit for the students. (Virg writes an excellent blog, can be found at NCTM meetings as well as the AP Calculus reading, and of course has a TpT page with many resources.)