use the vent to shoot the lava when the beast came near it

Stand infront of the parts were smoke comes out from and with the fire
gun(flamethrower)shoot the bit were smoke comes out from do this when it is about to bite
you.

Ther r 3 vents of gas. The one next to where slade is hiding is active. When the beast is
about to bite u blast the gas whith a flame thrower. U know when u did it right when the
beast gose under water.
The beast hase several modes of attack, tentical whip in which u go back and jump at the
right time, bite where u dive at the last moment, rock, and pillar toss where u just
rapidley dive 1 way then the other way.