On this page of the guide to Steelrising, you will learn how to defeat the Unstable Statuary Ram.
Being near the Unstable Statuary Ram can be dangerous, as it can make a spinning attack with the pillar held in its hand. Besides, if you run from it for too long, expect it to eventually run toward you and strike forward. He can also stab with the weapon.
First of all, it is worth getting rid of the Heavy Prototypes accompanying Unstable Statuary Ram. Otherwise, they will keep attacking you. After that, focus on the mini-boss.
Watch the robot's movements. It takes a long time to recover from attacks. Take advantage of this, run up deal a few attacks and return to a safe distance again, waiting for your next chance. You can use grenades - the explosive will do quite a bit of damage to him.