His opponent didn't make an effort to attack, only defend. This bought Raln more of the time that he needed to charge up the mist bullet in his hand until it reached max power five seconds later, now able to dent iron armor, and likely demolish trees as well. He didn't fire the attack yet, but instead came out from his hiding place behind the tree and advanced forwards until he was only ten feet away. He held his sword forward with the tip angled towards his opponent's upper chest. His left hand was positioned behind and to the left of his sword, held up at chest height as well, ready to fire the bullet past the sword at a moment's notice.

If his opponent did nothing to stop him he would now fire his bullet at him through whatever defense he'd try to use, striking his heart if things went his way. While the bullet was flying he'd also use this time to charge forward to take advantage of the chaos while he was dealing with the bullet, swinging his sword from right to left, horizontally across his neck, another possible death blow that would be happening within a second of the first. 

However, if his opponent did something to threaten his own safety before this plan could be carried out then he'd possibly be forced to change gears to protect himself unless it seemed like the best defense would still be a good offense.