Is this trike good for hilly riding?

Yes. The 7-speed drivetrain gives low enough gearing to climb neighborhood hills, and the disc brakes control speed on the way down. It is still a heavy steel trike, so long steep climbs take effort.

Can it carry a heavy rider?

The frame is rated for up to 420 lbs, well above most adult trikes. That rating covers rider and cargo together, so keep the total in mind when loading the basket.

How does it handle gravel and grass?

The wide knobby tires are made for loose surfaces like gravel, grass and sand. Three wheels also keep it upright on uneven ground, though soft sand still takes steady pedaling.

What is the difference from a two-wheel mountain bike?

You get stability and a rear cargo basket, but more weight and a wider footprint. It will not corner or climb as quickly as a two-wheeler.

Does it come with the rear basket?

Yes. The oversized rear utility basket is part of the build, sized for groceries, outdoor gear or a small pet.

How much assembly does it need?

It is described as ready-to-ride, so most of the build is done. Expect to fit the handlebars, pedals and any front wheel, and to check brake and gear adjustment before the first ride.