"TPOAIR" is a mini-campaign about which can be said that it is...ok. It´s not really something special(also I guess due to contest rules, because funky swords that shoot missiles are not stock), but not that bad either.

At first we have a city mission. Be warned that the outcome is dependent certain NPCs: One that triggers the objective via a dialogue, the other one spawns a certain object and must not be knocked out until then.
It can be a bit annoying if he freaks out due to seeing Garrett or a body, so it might break the mission without notice. Not the best solution IMO.
If you fail that objective or just don´t trigger it at all, the mission can be rather short, you get loot and then finish it, and get a "mission" with the only objective being to go to bed.
But then you will miss the real 2nd mission.
The city mission itself is average at best...some helmet guards make your life a bit more difficult(unless you play on Normal or Hard) and there are some areas that need climbing and looking for secret entrances. Total loot is about 7500 - I only found about 2500, so I expect I missed a lot of places. Anyway, I would recommend you to go for loot first before you continue with the objective - because after you progressed to a certain point in it the music from Assassins starts to play in a loop and with too much loudness - which can be quite annoying.

The 2nd mission is a mansion mission that is also not that special - it has some riddles that are okayish, not too hard but a bit awkward at times. Overall it feels like a bit of a beefed up Blackmail/Bank mission. Some standard guards, a few bots and mechanist security try to hinder you. Architecture is ok.

The writings are overall ok. Some of them contain important hints for the objectives, so have a look.

What I don´t like are the dialogues created with Text To Speech. I don´t know why he hasn´t just asked some members of the community to help him out. The TTS is really cheesy.

Difficulty is fair enough, the difficulties are well-balanced. Replay value? Well, depends on you. IMHO you don´t miss much if you skip the higher difficulties. There are no additional objectives. The abscence of a map is a bit of a nuisance, but thanks to the not so big size you get used to the layout after a while.

Overall, still recommendable. Not really top tier, but solid.