Sam and the archer faced each other with a series of attacks. The archer is quite skilled and he is too agile to be a normal archer. Because his attack rate is quite slower than normal and there is no way for him to beat Sam's attacking frequency at this current state.
After all, all Sam has to do is to control his will and let the bullet load, which happens with a single thought, load the methane gas which propels the bullets and that happens with a single thought as well.
Finally, a single pull of the trigger.
But the archer has a physically demanding job. But with his impeccable agility, he was able to dodge Sam and use archery skill to launch attacks at Sam.
In fact, Sam couldn't just shoot down all the arrows, he has to dodge at least half of the time. This is extraordinary and Sam must say, he is not as skilled in archery.