"Build an entire PoS system, from scratch, that will run in hundreds of airports around the world along with an accompanying back office. You have 6 weeks but 4 would be better"

Even for an agency this was an insane ask but they decided to only put myself, mid-level at the time, and a junior dev on the project.

Somehow we just about managed the deadline and the system has been up and running for almost 9 years now.