Even though he was injured and didn't feel like moving, Du You knew he had to fight. If a dark goblin managed to kill his brown bear, it would be his turn to die next.
With this in mind, he circled around the dark goblin. His bow and arrow had been discarded somewhere in the heat of the previous battle. Taking advantage of the ongoing fight, Du You managed to approach the battlefield without being noticed.
As the Dark Goblin released another Dark Arrow, Du You sprang into action.
He cast a Magic Missile at the Debilitating Goblin, and followed straight behind it. The magic missile exploded on the Goblin's body, making it stumble backwards. A dent formed in its back, indicating its bones had been broken, but the injury wasn't too severe. That was the maximum damage he could inflect.