This is how you get the 'Cat Burglar' achievement.

Details: Reach the boss of area 5 in under 90 seconds.

This one is tough.
It is easiest if you have the iron boots and at least some of the protective gear, though it is not necessary.

Climb up the buildings starting on the left, until you need to use the tall lightpost. Climb up and when you reach the area where there is a silver ball painted on the building, swing to the left and swing again, pulling yourself up near the comm room.
Skip the comm room and head up the right side.
Climb up past the turrets and try to move quick so the flying droids dont keep you from moving.
Use the tall lightpost on the right to climb up further.
Use the tall lightpost on the right like before and swing to the building, and grapple up between the blue barrels.
Pull yourself up on the left side and enter the comm room.
Quickly initiate and terminate the connection, leave and start climbing up the last few platforms.
The blowers will send you in the direction you are facing so prepare to grapple to the platforms above.
Reach the top and enter! WHEW!