Thanks a lot for the kind words, and for playing the game as long as you have!
For the final boss and area, it's really important to get good at dodging. I would recommend the blue tonics to help in that department. Don't forget about eating food that buffs your abilities too, not just healing items. Finally, the boss has strong attacks but they are launched at fairly regular timing. Try your best to learn his timings, and dodge in and out as you strike!