The Pulsework Soldier is an enemy in Final Fantasy XIII, an ancient machine from Pulse. It is one of the most resilient enemies found in the Vile Peaks, being resistant to all types of attacks, and one of the hardest in the area. They do lose these resistances when staggered, and also lose their ability to attack, making defeating them once staggered trivial.
Thankfully, because of its alliance, Pulsework Soldiers are often targeted by the roaming Cocoon Watchdrones and Thexterons. Choosing the right side when engaging these warring groups is the key to victory, as taking down Pulsework Soldiers is often tedious. Exploiting their weakness to Lightning by using Lightning's Thunder and Sparkstrike attacks help.