Guide Super Mario 3D All-Stars: Dreadnought's Cannons

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This page offers a walkthrough for the Dreadnought’s Colassal Cannons Power Star in the Dreadnought Galaxy. This galaxy is found in the Garden dome at the top of the observatory.

Walkthrough

1
You’ll land on a platform with a gap. Use Bomb-ombs to get a 1-Up Mushroom in a cage on a lower platform.
2
To cross the gap, stand on nuts and bolts to make them turn clockwise, moving them closer to the next platform. Jump across when close enough or continue turning them until you reach the platform.
3
You’ll face an uphill obstacle with Mini Wanwan (mini Chomps) and electric rails. Flip accessible switches from blue to yellow. Once all switches are yellow, they turn green, removing the first wall of electric rails.
4
Repeat the switch-flipping process for the next set of switches. This will stop the Wanwan spawning and remove the remaining electric rails.
5
At the top, use two sets of nuts and bolts to reach the next platform, turning them clockwise by stepping in specific areas.
6
On the second set of nuts and bolts, two Octopuses will spawn and shoot coconuts. Deflect the coconuts back at them with your spin attack. Be aware they can also shoot fireballs that cannot be reflected.
7
Past the Octopuses, you’ll find two ? Blocks (one with Coins, one with Star Bits). Take the Launch Star to the next area.
8
The Launch Star takes you alongside the Dreadnought. Ride a moving platform, avoiding Cannonballs, electric rails, Thwomps, and floating mines. Jump over electric rails and stationary platforms to stay on the moving one.
9
You’ll need to jump to an upside-down platform with a Mini Goomba. Continue avoiding Cannonballs and climbing over higher platforms. Jump to a moving platform below.
10
Quickly move from the moving platform to a stationary one with a Thwomp. This platform will move upwards to a sideways-facing platform, then another upside-down platform.
11
After avoiding hazards on the upside-down platform, you’ll reach the last platform with a barrage of Cannonballs. Time your movements to survive.
12
The final platform leads to two Jump Beamers that attack with circular laser attacks. Use the second Jump Beamer to reach the Power Star above it.

Tips

Stepping on nuts and bolts in certain places makes them turn anti-clockwise, moving you backwards.
A spin attack on coconuts will cause them to home in on the Octopuses.
Getting hit by hazards like Cannonballs or electric rails can stun Mario, causing him to fall.
With good timing, you can pass the barrage of Cannonballs without taking damage.

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Dreadnought's Colossal Cannons