Trying to open up a Victron 150/100 MPPT charge controller (very difficult to disassemble!)

In this video I am trying to take the cover off a Victron 150/100 MPPT charge controller. These are not like the smaller versions with a fuse on the bottom left hand side. This was not an easy job as they make it very difficult to disassemble them. I would say that I had some success in that I did end up opening it it up; however I probably caused a great amount of damage. Next time I would use the hole saw method as seen on other videos.