Before the boss could come up with another wave of attacks that would force Jason to focus on defense and not move, he charged toward the monsters while enduring the explosion of the fireballs and the arrows scratching his body while he focused on protecting his vitals.
When he got within range, Jason changed his weapon into the saber and then began to stab the enemies' heads without hesitation. Still, much to his surprise, they didn't try to avoid his attacks. In fact, they used that brief time window to fire at him their fireballs and arrows as well.
The attacks landed, and then Jason clenched his teeth as the pain began to cover his whole body. His skin began to burn, and blood began to fall from the arrow wounds, but he kept going and attacking while ignoring the pain as much as possible. Still, he was forced to stop when the boss fired new projectiles at him.