The Activity Club and the Ice Dungeon Challenge

Isaac wraps his hand in spectral energy and runs at Scrooge. Scrooge, however, was expecting it and dodges out of the way. Isaac runs into the wall of the gingerbread house, which begins to crack. Isaac realizes the house is about to collapse and backs up, but Scrooge, intent on destroying Isaac, does not notice. The roof is beginning to fall in. Isaac is safe, but Scrooge is in danger of being crushed.

What should Isaac do?