Well my problem is that I cannot climb up the ladder, and I've already patched the game. When I face my character at the ladder and press 'e', he'll say "It's a ladder". But when I press "enter" or "u" he'll go something like "I bet I could get over to the other roof by the leg of the sign but ... ", and the picture of the Lady Luck will be on my screen. When the narration is done the camera switches back and my character will be facing in the direction opposite to the ladder! I tried ramming into the ladder but he'll just run around the ladder.

Someone please help! Thanks!

try using an alternative control method to do it, like a joystick.

There might be something you have to do before you climb up the ladder.