Special operations technology, this is something Interstellar Warriors excel at.
If discovered by accident, then simply kill the person who found you.
As long as you take out everyone who sees me, that's a perfect infiltration!
Russell infiltrated deep behind enemy lines and found the enemy's division command post, single-handedly destroying it. There, he also encountered an Evil Priest accompanying the army, who attempted to shoot him with a beam of Evil Power, but it clearly couldn't succeed. Before being hit, Russell took the priest's life with his Blast Bomb Gun.
After the division command post was destroyed, the rebellion's command system instantly collapsed.
Then Russell, without hesitation, stormed into the artillery positions. The artillery, several dozen kilometers behind the front line, never imagined they would face such a harbinger of death.
Large-caliber heavy shells, if they directly struck Russell, then even with Power Armor, he'd likely be injured.