When you see it you do not have to rush, as you won't make it anyway. If you do not want it, then just do not rush. The description below will tell you how to reach DeFalco on time. On the other hand, you will not get access to the strike-force mission entitled 'Second Chance'. You will also get an achievement 'Good Karma'. However, watch out for the target meter counter - when it turns into a flashing red word 'DeFalco', it will mean that you need to take another important decision! You have two options and each has its consequences: When you get to the wall, turn left and run in such a way as to have it to your right.
After descending the stairs sprint exactly forward, then straight ahead along the oval rail on the right (of course, always watch out for enemies, in the meantime, you can hide behind the basket, for example). Before you go down completely, shoot the enemies hiding, among other places, behind the silver basket in front of you and among the big pots on the left (picture above). It's easy to get lost in this vast area, so follow the instructions.