Last boss at mental level 76 (Serious Sam 3: BFE)

I decided to replay. I chose the mental level 76. All ghouls are 4 times healthier. I made it to the end. Iiiiii ... !!!
the last enemy with five crowbars in his back after a lightning strike has health that five charged cannonballs will not knock him down. Plus, it recovers quickly. Over the years, the game has been patched, but not entirely for the better. To chain the developers to the table. And until they pass, do not feed. that would be fun ...
Has anyone overplayed?