Gaining some distance would be a novel tactic. He fights until he accomplishes his goal, whether that goal is killing the enemy or something else; running away is not something he does.

Except now, apparently. Running from the First Order, running from Snoke. There are other things he's running from, too, but they aren't physical threats and he refuses to acknowledge that they even exist.

He nods and doesn't even make a snide comment about the old man looking tired. Shooting rocks is the most serious of business and serious business leaves no room for being snide. He takes off at a slower pace, determined to succeed at this exercise before stopping.