6 Rocks Under: Get yourself buried under rocks
After the last checkpoint, try and drop from the hanging rock to land on the downward slope below. Doing this should give you the speed required to bailout on the final ramp, flying over the finish line and under the conveyor belt beyond.
With enough momentum you'll slide to the bottom of the conveyor and fall into the hole beneath the end.
Now all you have to do it wait a few seconds for the rocks to fall.
Welcome to Warp Zone 3!: Find and complete the warp zone!
After you land on the large rock hanging diagonally from chains, stop on top of it - you'll need to lean forwards and use your revs to hold yourself there.
A few seconds later the rock will rise up, to reveal a portal you can jump to from the top end of the platform.
This take you to yet another tough warp zone course.
Afterburner: Fly through all of the rings of fire
When you start the track, back up onto the afterburner then pull back on the stick as you launch forwards to get into the air.
Use light touches on the left stick to steer through every ring of fire - try to get as close to the centre of each one to ensure they count.
As long as you don't miss any on the way, the Challenge will unlock when you pass through the final ring.
Darksider: Stay up late and complete Eco Park's dark side
Near the start of the track, back up onto the red button by the large counter display and wait for it to tick up to 10.
This will move time forward to night, and also take you to a more difficult version of the course.
Protected Species: Don't hurt the penguins!
Reverse down the ramp at the start of the track to find a large penguin, which dives into a hole when you get near.
The track will now feature a handful of penguins, placed at various points to try and hamper your progress.
Despite what the Challenge description suggests, it doesn't matter if you hit the penguins - but they will make you crash!
Reconnecting...: Get metal to metal to reconnect the device
After riding up several hanging crates with lights on the sides, bailout over the top of the next stack of three crates to reach the hanging platform on the other side.
Grab the cables hanging down, then let go and try to drop down below the platform and grab the crate underneath.
Once you've got hold of the crate, swing back and forth with the left stick until it connects to the cables hanging down.
Blackout: Short circuit the electricity to kill the lights
From the first ramp at the start of the track, bailout upward towards the sparking cables hanging above.
Grab one of the cables, then wait until a short circuit causes the lights to go off.
After respawning you need to complete a faultless run of the track, otherwise the lights will turn back on. Put some practice time in to learn the course before attempting this!
Little Waddling Bundles of Joy!: Find the penguin's home
When you reach the fallen tree trunk near the finish, drop slowly from the end and land on the ledge below.
Back into the hole with smoking coming from it.
This leads down into the penguin's home, triggering a cutscene.
Human Pine Cone: Join the other cones on the pine tree
Bailout on top of the partially collapsed bridge, then drop through the gap on the left of the checkpoint.
Grab onto the pine tree as you fall, and keep holding on.
A few seconds you'll see a flock of birds fly off as the camera pans out.
Penguin Chase!: Catch that penguin!
Back up at the start of the track and you'll spot a penguin sat on the rocks.
When you get close, it'll jump over you and set off along the track.
You now need to chase and catch it while performing a faultless run - as long as you practice the track in advance you should be fine.