Another time we did do that level on pro Tuff, and omg haha we died a lot, the main problem wasn't the boss (which died super fast), it was just the manjini on the hillside with the dynamite sticks that really screwed us over often, lol.
I remember I cheated and got my PSG1 out after dying like 30 times, so I did do that eventually, maybe that's how we got through, lol.
btw, i just licked that pic