Reach the end of Fire Canyon was a mission that Jak and Daxter completed to obtain a power cell in The Precursor Legacy. Keira Hagai required 20 power cells to properly power the heat shield on the A-Grav Zoomer to be able to start this mission. Jak then had to cross the Canyon and turn on the teleport gate in Rock Village to allow Samos and Keira to come over.
The PlayStation 3 and Vita versions of this mission are related to a trophy named "Zoom!", completing this mission will reward you with a bronze trophy.
You only use the A-Grav Zoomer this time, technically the mission starts the moment you get on and ends the moment you reach the trans-pad at the end of the Canyon. Driving skill is key in this mission, with the heat of the lava being the main danger. If the heat meter builds up fully the zoomer will explode.
It rises slowly when flying over molten lava but quickly over open lava, which should be avoided as much as possible. Use Precursor metal platforms or babaks to stay airborne and avoid the heat directly. Using can also alleviate the heat danger by hopping over the lava pools.
Other dangers are sudden drops into bottomless depths, stalagmites suddenly appearing in front of you and blocking your way and stacks of dark eco boxes. The stalagmite generally come in pairs where one goes up and the other goes down, they have a tendency to go switch positions right when you intend to cross them however.
Notably Keira has released many cooling balloons, bright blue they're easily noticeable. Hit them to lower your heat meter. Several blue eco vents can also be used to gain a useful speed boost and cross the Canyon quicker.