Cremutus took in the battlefield with a practiced eye, Heretic fought Imperial navy and the fighting was close. Cremutus knew that his intervention would turn the tide of the battle, Quickly survaying the area for a rocket launcher and seeing none he proceeded to move quickly from cover to cover, attempting to keep a smaller profile and gain some sort of advantage. Finding an acceptable amount of cover he crouched down at an adequate range of 100 meters, he sent off a rapid fire burst of bolt shells at the wretch manning the heavy stubber, as well as a few of his neighbors. 

Tzeentch was not with him, his first 4 bolts did nothing but pepper the Arvus lander with new holes. One however did penetrate and explode against the Rattings armor, from which he was unscathed. Cursing the fool he was, Cremutus tongued the control for the auto senses to assist his aiming and quickly adapted the Mind Inpulse Unit's targeting matrix to cooperate. Taking aim for a half second he fired one bolt, blessed by the changer of ways. The bolt passed between the dog's eyes and exploded a fraction of a second later, peppering his compatriots with specks of brain matter and skull fragments. 

Cremutus remainded Kneeling behind his cover. With the souls of all the men he had murdered attempting to escape from the prision of his Combi Melta, Cremutus took on a frightening aspect of death, Death for the Corpse God. Death for the False Emperor blind followers. DEATH FOR ALL THOSE WHO APPOSE HIM.