Complex sentence: They can also be used to attack the goblins in the campaign portion of the game--the campaign mode offers gold and elixir to be raided, however players gain no trophies from destroying villages in this game mode.
Split into simpler sentences: They can also be used to attack the goblins in the campaign portion of the game. The campaign mode offers gold and'elixir' to be raided, however players gain no trophies from destroying villages in this game mode.