Complex sentence: In the first season finale "Rise of the Goblin", Green Goblin attacks and sends the Helicarrier crashing into the sea while Connors is successfully evacuated but his right arm is severely damaged and has to be amputated.
Split into simpler sentences: In the first season finale "Rise of the Goblin", Connors is successfully evacuated when Green Goblin attacks and sends the Helicarrier crashing into the sea. However, his right arm is severely damaged and has to be amputated.