from the level with merlon's house...
go down 1 level
bomb the wall on the right??? there's a crack there
flip and go behind houses
between the 2 houses (one is a card shop) there is a riff?? on the wall
use Fleep to open the door.
flip and walk left?? there's like a temple you go into
hit all of the block 1 time. the glass/mirror will go away away and there you go!
pay the $ when you get over there and a guy will make a tunnel between the 2. he can only be seen in 3D mode