In my opinion, getting the badge is not difficult. As long as we use the right and proper method, we will easily obtain it. All the materials such as lecture videos and notes are provided by the AWS Academy. We just need to properly manage our time and we can easily complete all the modules in a limited time.
From my perspective, the easiest module is module 1, as module 1 is just a simple briefing about what AWS is, the importance of AWS, the benefits of utilising the cloud and so on. Module 1 without any lab exercises can be done in a short time.
For me, the hardest module is Module 6, Compute. This module mainly introduces the functions and structures of Amazon EC2, AWS Lambda, and AWS Elastic Beanstalk. As this information is new to me, So, I take lots of time to understand these deeply. Besides that, this module contains two activities and one lab exercise. Thus, I need to spend lots of time completing these practices.