This question is another behavioral-based query and the best approach to this question is to use the STAR method of Situation, Task, Action, Result. Describe the project, providing sufficient background information to give the interviewer a broad enough understanding. Then, discuss what your professional responsibilities were when it came to this intense project. Next, expand on the tasks you were directly involved in to meet these project needs. Lastly, be sure to include the positive impact that your work made on the outcome of the project.