The Big Dig is the fourth and last mission of Greenfold Meadows, the first world in Helicorn. At the end of it waits the biggest machine in the meadows. It’s Tuesday, so here’s what to watch for along the trail, and how to take Big Dig apart.
The picture at the top is the very end of the trail. Thistle hangs right beside Big Dig, a giant excavator on tracks. It has a yellow body with black stripes, two tall exhaust stacks, a little turret on each side of the cab and a long arm with a toothed bucket.
Copters that stop to aim
Before the mission, Tilly sounds the alarm: “Something huge is digging up the meadow. Its name is Big Dig.” Hatch adds that it “brought flying cameras.” These are the Survey Copters, new in this mission. The first one shows up alone at the edge of the orchard, a yellow box of a helicopter with a long dark gun.
A Survey Copter flies out ahead of you, stops and hangs there for six to eight seconds, swaying a little, then peels off to the side. While it hangs, it shoots an aimed burst of three every two and a half seconds. Half a second before each burst, the light on top turns magenta. In Helicorn, magenta only ever means enemy fire, so that light is your cue to move. Tilly puts it best: “Copter! It stops to aim. Don’t stop with it.” The Paver, meanwhile, is having a great day: “SMILE. YOU ARE BEING SURVEYED.”

One good spark
Past the orchard, Wren Ashby, the pilot, spots the first big prize: “Plant and a tank farm. One good spark...” An Asphalt Plant stands by the road with tanks on both sides of it. Go for the drum. When the drum blows, the blast sets off the kettles next to it, and the kettles finish off the bins. The plant sits right beside the tank farm, so one good hit can turn the whole row into a chain of bangs.
That drum has one more thing going for it. It’s gold.

Three gold lights
Most of the Paver’s machines wear an orange light. A few targets on each trail wear a pulsing gold one instead, and The Big Dig has exactly three: the plant’s drum, a Gravel Silo down in the quarry and a crane a little past the quarry. Your screen shows a gold leaf for each of them, and every gold target pays double Scrap.
Gold also counts toward Ranger Badges, the sewn patches with a pine on them. Every mission has three: Trail cleared for finishing it, Clean sweep for breaking at least 80 percent of the machines and buildings that came into view, and All gold targets. Badges open new paints in Hatch’s Shed, and every paint fits all three helicopters. Sunrise takes three badges, and Goldleaf, the last, takes 66.
Sheds worth breaking
Four of the little Site Sheds along this trail hold something good. The first one, near the start, holds a capsule for the Sprinkler, the gun that sprays teal droplets. Another, down by the creek, holds a capsule for the Chipper, the nose cannon. After the quarry there’s a shed with a glowing hoop that adds two shield rings. The last shed, right before Big Dig, holds a green leaf-heart. Don’t skip that one.
The ambush
Halfway through, Tilly calls out: “Both edges again. And one above!” Dozers roll in from both edges, a Survey Copter takes the sky above them, and two lines of Cone Drones dive in, one on each side. A checkpoint waits right after.
After the quarry and the crane comes the farm, the busiest stretch of the mission. The road forks, Rollers come down both roads, Mixers and two more Copters join in, and Hatch notices something: “The ground is shaking. That’s not the rotor.” On Backcountry, the hardest setting, two extra Mixers wait near the end.
Big Dig: arm first
The Paver introduces its star in capital letters: “STAND BACK. BIG DIG IS DIGGING. BIG.” Tilly’s advice is shorter: “Big Dig! Arm first, then the stacks.”
Tilly is right. The arm lobs clods of asphalt high into the air, one at a time at first and two at a time later. Each clod is a gray lump, and a magenta ring on the ground marks where it will land. The two cab turrets fire aimed bursts of three, and the two exhaust stacks fan out five shells at a time, faster once the fight gets going.
The arm can’t hold on forever. When Big Dig is down to a third of its health, the arm comes off even if you never touched it, in a fountain of Scrap. In the last stretch, Big Dig lunges toward Thistle. Its engine is open now, so every hit on the body counts for more.

World 1, Greenfold Meadows, The Big Dig included, is free to play in your browser at helicorn.com. The full game, all six worlds, is $4.99, paid once. More about the game is on its Helicorn page.



