I'm creating this page partly out of curiosity and partly by request.
So which one is the hardest? Which one is the most memorable? Comment on whichever you feel like writing about.
The Radar base or HQ in AC1, Greased lightning, El Dorado, or One Night Stand in AC2, escape from Stonehenge in AC04, Payavelenie (or however it's spelled) ravine in AC5, Avalon in ACZ, Stand Canyon in ACX, The supply warehouses in Xi, Ragno or the WMD canyon in AC6, the 747 in X2, or the Big Bear fight or Bomber Flight in AH?