Develop a Web product with a list of features and functions as long as your arm, and do it in half the time, with a too-small staff and an insufficient budget. Welcome to the death march project. It's true that assessing project risk is a lot like herding cats.
Problems can develop on any project at any time.
Unanticipated market events can put the project at risk. Or your key programmer goes out on maternity leave. The client declares bankruptcy. Death march projects, on the other hand, have trouble built in from the very beginning. On the death march project, survival may qualify as success.