Boss Guide

MOTORSLICE — All 8 Boss Fights

Every colossal heavy machine, every weak point, every parry window. Start at the top, work your way down.

MOTORSLICE has 8 colossal bosses, one per chapter. Each one is a climbable level. Below is a concise step-by-step guide for every fight, in story order. Click a boss in the index to jump.

Boss Index

#1 Dump Truck — Chapter 1 — City (4 weak points)
#2 Helicopter — Chapter 2 — Skyway (3 weak points)
#3 Fur (Giant Mech) — Chapter 3 — Sand Pit (4 weak points)
#4 Crane Train — Chapter 4 — Ring Track (5 weak points)
#5 Double Excavator — Chapter 5 — Quarry (6 weak points)
#6 Combine — Chapter 6 — Fields (4 weak points)
#7 Bucket Wheel Excavator — Chapter 7 — Megapit (7 weak points)
#8 Flying Train (Final Boss) — Chapter 8 — Sky (5 weak points)

#1 Dump Truck

Chapter	Chapter 1 — City
Weak points	4
Main threat	Front-mounted crusher (instant kill).

A massive four-wheeled truck loaded with sand. You fight it from the inside out.

Step-by-step

Run UNDER the truck from the side — never the front.
Grab the lowest orange beam, then jump up between the beams to climb into the body.
Pass through the narrow passage on the right; wall-jump to the orange pole.
Jump onto the orange surface and chainsaw the first weak point.
Slide down the ramp and chainsaw the niche above the front crusher (weak point 2).
Use the chainsaw on the side panel, drop, re-anchor under the wheel to reach the rear.
Climb to the roof. The bed will tilt — run forward, jump to the front weak point.
Chainsaw the final weak point. Truck collapses into sand.

#2 Helicopter

Chapter	Chapter 2 — Skyway
Weak points	3
Main threat	Saw projectiles, ramming.

Compact but mobile. Almost the entire body is a weak point — getting on it is the challenge.

Step-by-step

Phase 1: Parry the circular saws it throws. A parried saw stuns and grounds it.
While grounded, jump on the side hull and chainsaw the first weak point.
Phase 2: it stops throwing saws. Use the platforms in the arena.
Watch its flight path and time a jump onto its body as it passes.
Repeat until all weak parts are destroyed; it crashes onto the rooftop.

#3 Fur (Giant Mech)

Chapter	Chapter 3 — Sand Pit
Weak points	4
Main threat	Drill arm, holes in the floor.

A two-legged mech with a flat head and a drill arm. The arena floor is full of pits — minding the floor is half the fight.

Step-by-step

Wait for a leg to plant, grab it, chainsaw up to destroy weak point 1.
Walk the leg joint, climb the front steps to reach the central circular weak point. Run a full circle on it.
Grab the orange beam at the back, jump to the horizontal bar, swing to the wall.
Wall-run multiple times in a row to reach the next level.
Climb the staircase, wall run forward, chainsaw across the orange surface (weak point 3).
Move along the closing hatches to the orange pole; swing onto the head.
Drop into one of the openings on top to reach the final weak rows. Chainsaw all of them.

#4 Crane Train

Chapter	Chapter 4 — Ring Track
Weak points	5
Main threat	Hooks dragging mines on the track.

A platform on wheels with three cranes that ride a circular track. The hardest fight in Act 1.

Step-by-step

Stay on the OPPOSITE side of the track at the start. Dodge the hook + mine pattern.
Reach the rear crane boom and chainsaw along the orange surface (weak point 1).
Climb onto the platform. Chainsaw the bases of all three cranes (3 weak points).
For the last two: stay ON the train — it slows down. Jump off the front and rear to chainsaw each.

#5 Double Excavator

Chapter	Chapter 5 — Quarry
Weak points	6
Main threat	Bucket slams + circular saws fired in waves.

Aggressive and fast. Doesn't aggro until you approach. Most weak points hide on its body and tracks.

Step-by-step

Walk close to trigger the cutscene. Bait bucket slams.
After a slam, chainsaw the first weak point on the leg.
Run up the leg, reach the rear box. Chainsaw the right side and jump the wire fence.
Find the orange ramp fragment, chainsaw across over the saws to weak point 3 at the rear.
Wall-run behind the boss, enter through the side hole, chainsaw above/below the inner saws.
Crawl through, find the floor opening, drop onto the tracks.
Circle the central tread weak point with the chainsaw.
Last two weak points are on the tracks themselves — patience, the boss jerks fast.

#6 Combine

Chapter	Chapter 6 — Fields
Weak points	4
Main threat	Long center blades, ram attack.

Most unique fight in the game. You use floor fans to launch yourself onto its top.

Step-by-step

Parry the long blade — the Combine falls over, exposing its underside.
Run along a blade and chainsaw the underside weak point.
Let it stand back up. Lure it over the floor fans.
Use the updraft to land on top. Chainsaw the two side weak points.
Run along the central path to the front. Slide off the sloped edge, chainsaw across the front orange surface for the kill.

#7 Bucket Wheel Excavator

Chapter	Chapter 7 — Megapit
Weak points	7
Main threat	Sheer scale + crushers.

The longest fight in the game. The boss IS the level. Expect 20+ minutes of climbing.

Step-by-step

At the start, parry the swinging paw for the ‘Parry That!’ achievement.
Climb the tracks; swing from the horizontal pole to the orange wall, then jump to the gray platform.
Use the rotating platform to reach the gap. Chainsaw left → up → left through to the back.
Wall-run from weak point 1 to weak point 2 around the back.
Chainsaw weak point 2, drop, re-anchor when needed.
Take the lower path at the fork; climb the ladder, wall run, chainsaw the orange surface above.
Activate the side mechanism — it lifts you up to the next weak point.
Reach the big wheel: run/climb it, jump to a wall, then to a horizontal pole, swing across.
Final stretch: slide down the arm to the orange beam in front of the giant saw, time a jump onto a moving bucket, ride it up.
At the top, slide down the beams to the narrow ledge. Chainsaw the final weak point.

#8 Flying Train (Final Boss)

Chapter	Chapter 8 — Sky
Weak points	5
Main threat	Buzzsaw traps, mines, rotating orange beams.

A train that flies. You board it, run it from front to rear, and chainsaw 5 weak points on the way.

Step-by-step

Run beneath the train until the hack prompt appears. Activate it.
When it dives to ram you, jump TOWARD the front to cling on.
Climb the roof toward the rear. Avoid buzzsaw traps between cars.
At the rear, drop and turn the valve to open the gate.
Inside: wall-run past the mine, jump to the next car, chainsaw weak point 1 (mind the rotating beams — jump on the right rotation).
Wall-run, jump to the orange pipe, follow it around the corner. Chainsaw weak point 2.
Swing on the poles, jump to the wall, chainsaw weak point 3. Follow the corner around.
Bounce off the wall crack, ride the fans up to weak point 4.
Hack the crushers in the next car, RUN through before they reset.
Final car: moving walkway — never stop running. Final weak point has saws in the center. Chainsaw through.

Related guides

Last updated: May 7, 2026Author: MOTORSLICE.org EditorialGame version: 1.0 (launch build, May 2026)

Sources & references