Have you ever worked without an analyst, when you had to figure out the task on your own?

Yes, I have experience working without an analyst. In such cases, I usually start by studying available documentation, requirements, and discussions in the task tracker. If there is no documentation, I try to understand the task through analyzing existing code and application behavior. It is also helpful to communicate with colleagues who can provide context or hints. Sometimes, I create prototypes or small experiments to test hypotheses about the task. This approach helps me understand the requirements independently and make the right decisions.