The Infiltration section of this scenario has a couple of issues that jumped out at me.
1) 15 Awareness Point threshold doesn't seem to do anything that actually changes the scenario. During the infiltration they players won't run into the boss unless they fail, in which case they'll always have passed 15 AP, and if they don't reached 15 AP they won't meet the boss anyway. (Not to mention the 15 AP threshold doesn't adjust any encounters anyway.)
2) DCs aren't listed, but instead the obstacles say things like "hard or very hard Athletics or Thievery". I can't really make sense of that. Not only are "hard", "very hard", etc. not defined, is that supposed to mean "hard Athletics or very hard Thievery"? Every obstacle is listed like that, so it's not a one-time typo.
I'd guess the DCs are should be, based on the rest of the scenario:
Standard = DC 18
Hard = DC 20
Very Hard = DC 24
With +2 to each DC for level 5-6.
3) There's also weirdness about the scaling. It just says "For each PC beyond 4, increase the Infiltration and Awareness points needed by 2". Awareness points are simple, but Infiltration Points are per-obstacle. What's missing is that the second obstacle is individual rather than group, meaning each PC has to overcome it by themselves. It takes 2 IP, so each additional PC will mean the group needs two additional IP to complete the Infiltration, but there's actually nothing special the GM needs to do to scale the obstacles except properly run the individual obstacle. (That's also why the scenario says the PCs need 15 IP to complete the infiltration: what it means is a group of 4 PCs will get 15 IP by overcoming the obstacles - 1 IP (first obstacle) + (2 x <number of PCs>) (second) + 3 (third)).
