The Halo Experience Showcase/Walkthrough
From Halopedia, the Halo wiki
For this Showcase Event, you will be driving a stock (A 756) M12S Warthog CST and following a D79-TC Pelican to a landing zone. As soon as the Showcase Event starts, you will immediately be driving and following the Pelican, which is chased by Banshees. Unlike in Halo, the Banshees never attack and only act as moving props. Checkpoint 1 is 480 feet (146 m) ahead. Make a right and immediately turn back to the left, but make sure to watch out for Covenant scenery props (supply cases and stationary shield generators), as well as the race barriers. Unlike the race barriers used in other events, these race barriers are actually indestructible solid objects and made out of hard light. Checkpoint 2 is immediately ahead. Feel free to take in the beautiful scenery (including the Halo ring in the background), but focus on reaching the checkpoint up ahead, which leads to a ramp that will lead you to Bamburgh Castle. Make sure to have at least 140 kilometers per hour (87 mph) of speed upon approaching it to clear the gap. Note that missing a checkpoint triggers a five second warning to rewind; if this warning is ignored, you will be reset back a bit.
Upon landing, you will notice that the race barriers converge closer together. Follow the path through the archway and out of the Bamburgh Castle. Here, you will notice UNSC military scenery props that are indestructible and other normal scenery objects that are destructible. For extra Skill Score, smash the trash cans for "Binman" skills.
Residential Homes and Farmlands
Once you reach the south end of the castle, you will exit it and encounter a Marine in another Warthog. He is actually controlled by Drivatar AI, meaning you can pass him for "Pass" skills or get behind him for "Drafting" skills, but you don't actually race against him or the other Marines in the event. However, the Marines can often get in your way, which can result in them crashing into you, so try to outmaneuver them.
Entering and exiting the Bamburgh Castle parking lot, make a hard right followed by another hard right, but always make sure to avoid contact with the Covenant scenery and hard light race barriers. Checkpoint 3 is just ahead. Drive through it and then prepare to hit the brakes hard as Checkpoint 4, which is located directly in a residential area near Bamburgh Castle, is followed by a sharp left. After clearing this checkpoint, follow the path for a sweeping left turn that takes you back onto asphalt roads, passing through the fifth checkpoint.
Power through a short straight that takes a detour onto farmland, and brake again for a hard right that goes to Checkpoint 6. Continue driving through the route, and you will jump over a section of road that is blocked off by military props and construction props. If you don't have enough speed, though, you will instead drive directly on the road, and you can smash the orange fences to get "Road Open" skills for extra Skill Score. Otherwise, just make a shallow right turn to get to a ramp that triggers a cinematic cutscene in which two Banshees chase the Pelican and simultaneously perform loop-the-loops while you land and reach Checkpoint 7. By this time, another Marine named Stacker will have appeared.
Immediately hit the brakes after landing, as you will be greeted by a long left turn, the first part of which is sharp. Checkpoint 8 is ahead. Drive through it, and take a detour through the railroad tracks by making a sharp left turn. Don't worry about any railroad trains coming through, only the Covenant and UNSC scenery props that are littered everywhere, so stay on the railroad tracks for 800 feet (244 m). A Banshee will fly through, but it can easily be ignored. Reach Checkpoint 9 directly ahead, and make a wide right turn. Then drive straight to Checkpoint 10 ahead, but try not to touch the race barriers. There will be a herd of sheep that will get in your way, but they are programmed to automatically evade you with a 100% success rate, so no need to worry about them.
After clearing Checkpoint 10, make a shallow diagonal right turn followed by a slightly sharper right. Checkpoint 11 immediately leads to a left turn that takes you onto the M68 Motorway, but make sure to brake hard here to avoid slamming into the walls.
Tunnels Are Not Natural Formations
You will have to take another detour by driving through the M68 right side tunnel, as the left side tunnel is closed off. Drive into the tunnel and max out your speed here, making sure to weave left and right to avoid Covenant scenery. Cortana will comment that the tunnel is "not a natural formation". About halfway through the tunnel, you will find a ramp and jump it. Upon landing, you will inevitably destroy some scenery objects, including orange road fences for "Road Open" skills. However, always be careful of blue hard light small fences on the ground, as these cannot be driven over due to the game giving them the same height as standard walls.
Continue speeding out of the tunnel. At the end of the tunnel is a ramp and Checkpoint 12. Jumping this ramp will trigger another slow-motion cutscene where the Pelican appears again.
Good to See You Again
Exit off of the M68 and make a left to reach Checkpoint 13. You can shortcut the next few curves by braking and making a sharp left and gunning straight for Checkpoint 14, but once again, steer clear of Covenant scenery. Continue following the path to Checkpoint 15, which is just ahead, placed right before the final ramp. At this point, you will actually max out the Warthog's speed at 194 kilometers per hour (121 mph).
This Would Be a Very Good Time to Leave
Jump the ramp to trigger the last slow-motion cutscene in which two Banshees fly through. At this point, you should actually be jumping over the Pelican, but only for a very brief period of time. Once you land, you will get an "Ultimate Air" skill with a trade off of a loss of speed, which should be more than enough for you to avoid immediately crashing into the hard light barriers in front of you. Note that the Pelican can be touched, like with all other opponent vehicles featured in the other Showcase Events, so try not to touch it or you will lose too much speed. Continue following the path until you reach a small valley of rocks that leads to the beach south of Elmsdon-on-Sea.
Steer to the left to reach Checkpoint 16, and immediately use full throttle to reach the finish line, which is at the landing zone just ahead. There are three pairs of blue/purple checkpoint flares just ahead, with the last one marking the finish line is. Drive through them to finish the event.
You should get an average race time of 03:15.000. Note that you can never run out of time in this event.