Ahh... I see what you're saying, when I made my maps I put ladders in for that first level... Dawdler left em out cause he is a n00b!
You do have to use a speederbike and fly into one of the open outlets to access the ATATs.
"Munchkin: One who, on being told that this is a game about politics and intrigue in 17th century Italy, asks to play a ninja."—
Andrew Rilstone