Invincible after death, but in Warhammer 40K

As a dimensional traveler carrying high-dimensional information into the Warhammer 40K universe, would simply dying in a reasonable way lead to invincibility? Zhang Ge glanced at the lasgun in his hand and asked his companion the name of this planet. Upon hearing the answer "Sentinel," he remarked, "Never had such a wonderful start." As a grunt in the Imperial Guard, how hard could it be to die in a battle of this scale? You basically don't need to do anything - just stay in the trench, and the enemy will ensure you die in creative ways. However, things weren't as simple as they seemed. When merely touching the lasgun made its machine spirit tremble with joy, when he managed to peek out of the trench and kill a dozen heretics, when an artillery shell landed hard in the trench with its shrapnel and shock wave sweeping across the entire platoon's position, killing thirty to forty friendly troops except Zhang Ge himself... He realized that things might not be as straightforward as they appeared...