Blood Bros (arcade) - PCB photos
Blood Bros was released in 1990 and is the spiritual successor to Cabal, also by TAD Corporation. It can be simply described as Cabal in the Wild West, where a cowboy and an indian face off against various enemies including trains and airplanes.

I've played both Cabal and Blood Bros and prefer the latter due to its greater variety in backgrounds and enemy types.

Click on the photos below for higher-resolution versions.