Motorslice Boss Guide: All 8 Fights, Weak Points and Strategies

Motorslice puts you against 8 colossal machines, one per chapter, and every single one is a climbable level you have to dismantle from the inside out. There are no health bars to whittle down. You find weak points, chainsaw them, and move on. The trick is getting there. This guide covers every boss in story order, with the exact routes, parry windows, and climbing sequences you need to reach each weak point without falling into a crusher. 

How do Motorslice boss fights work?

Every boss in Motorslice follows the same core loop: locate the orange weak points, reach them by climbing the machine's body, and chainsaw through them. The fights are structured as vertical platforming challenges as much as combat encounters. Your two main tools are the chainsaw (for destroying weak points and anchoring to surfaces) and the parry (for deflecting projectiles and stunning certain bosses long enough to board them).

The number of weak points scales up as the game progresses. The Dump Truck has 4, the final Flying Train has 5, and the Bucket Wheel Excavator tops the list with 7. Knowing how many you need to destroy before a fight starts helps you pace your climbing and avoid rushing into bad positions.

Chainsaw a weak point to progress

Chapter-by-chapter boss breakdown

#1 Dump Truck (Chapter 1, City) — 4 weak points

The Dump Truck is a four-wheeled sand-hauler and your introduction to how Motorslice bosses work. Its front-mounted crusher is an instant kill, so the first rule is simple: never approach from the front.

Approach from the side, run under the truck, and grab the lowest orange beam. Jump between the beams to climb into the body, then pass through the narrow right-side passage and wall-jump to the orange pole. From there, reach the first weak point and chainsaw it. Slide down the ramp to reach the niche above the front crusher for weak point 2, then use the chainsaw on the side panel, drop, and re-anchor under the wheel to reach the rear. Climb to the roof, ride out the tilting bed by running forward, jump to the front weak point, and finish with the final chainsaw. The truck folds into the sand.

#2 Helicopter (Chapter 2, Skyway) — 3 weak points

The Helicopter is compact but constantly moving, which makes boarding it the main challenge. Almost the entire hull counts as a weak point once you're on it, but getting there requires patience.

Phase 1: the Helicopter throws circular saws at you. Parry them. A successful parry stuns the machine and grounds it temporarily. Jump onto the side hull while it's grounded and chainsaw the first weak point. Phase 2 drops the saw attacks entirely. Use the arena platforms to track its flight path and time your jump as it passes. Repeat until all weak points are destroyed and it crashes onto the rooftop.

#3 Fur, the Giant Mech (Chapter 3, Sand Pit) — 4 weak points

Fur is a two-legged mech with a drill arm and a flat head. The arena floor is riddled with pits, so half the fight is watching your footing while you climb.

Wait for a leg to plant, grab it, and chainsaw up to destroy the first weak point. Walk the leg joint and climb the front steps to the central circular weak point, which requires running a full circle to destroy. Grab the orange beam at the back, jump to the horizontal bar, and swing to the wall. Chain multiple wall-runs to reach the next level, then climb the staircase and chainsaw across the orange surface for weak point 3. Move along the closing hatches to the orange pole, swing onto the head, and drop into one of the openings on top to reach the final weak rows.

#4 Crane Train (Chapter 4, Ring Track) — 5 weak points

The Crane Train is a wheeled platform carrying three cranes on a circular track. The hooks dragging mines around the track are the main threat. This is the hardest fight in Act 1.

Start by staying on the opposite side of the track to dodge the hook-and-mine pattern. Reach the rear crane boom and chainsaw along the orange surface for the first weak point. Climb onto the platform and chainsaw the bases of all three cranes for three more weak points. For the final two, stay on the train as it slows down, then jump off the front and rear to chainsaw each one.

#5 Double Excavator (Chapter 5, Quarry) — 6 weak points

The Double Excavator is the most aggressive boss up to this point, firing circular saws in waves while slamming its buckets. It doesn't activate until you approach, so take a breath before triggering the cutscene.

Bait a bucket slam, then chainsaw the first weak point on the leg immediately after. Run up the leg to the rear box, chainsaw the right side, and jump the wire fence. Find the orange ramp fragment and chainsaw across over the saws to reach weak point 3 at the rear. Wall-run behind the boss, enter through the side hole, and chainsaw above and below the inner saws for the next weak points. Crawl through, find the floor opening, and drop onto the tracks. Circle the central tread weak point with the chainsaw. The last two weak points sit on the tracks themselves, and the boss jerks fast, so patience is the only strategy that works here.

#6 Combine (Chapter 6, Fields) — 4 weak points

The Combine is the most mechanically distinct fight in the game. The arena has floor fans that launch you upward, and you need them to reach the top of the machine.

Parry the long center blade to knock the Combine over, exposing its underside. Run along a blade and chainsaw the underside weak point. Let it stand back up, then lure it over the floor fans and ride the updraft to land on top. Chainsaw the two side weak points up there. Run the central path to the front, slide off the sloped edge, and chainsaw across the front orange surface to finish the fight.

#7 Bucket Wheel Excavator (Chapter 7, Megapit) — 7 weak points

The Bucket Wheel Excavator is the longest fight in the game. The boss is the level. Expect 20-plus minutes of climbing. Seven weak points spread across a machine so large it fills an entire pit.

At the start, parry the swinging paw (this also unlocks the 'Parry That!' achievement). Climb the tracks, swing from the horizontal pole to the orange wall, and jump to the gray platform. Use the rotating platform to reach the gap and chainsaw left, up, and left through to the back. Wall-run from weak point 1 to weak point 2 around the back. After weak point 2, drop and re-anchor when needed. Take the lower path at the fork, climb the ladder, wall-run, and chainsaw the orange surface above. Activate the side mechanism to lift up to the next weak point. At the big wheel, run and climb it, jump to a wall, then to a horizontal pole, and swing across. For the final stretch, slide down the arm to the orange beam in front of the giant saw, time a jump onto a moving bucket, and ride it up. At the top, slide down the beams to the narrow ledge and chainsaw the final weak point.

#8 Flying Train, the final boss (Chapter 8, Sky) — 5 weak points

The Flying Train is the final boss. You board a train that flies, run it from front to rear, and destroy 5 weak points while avoiding buzzsaw traps, mines, and rotating orange beams.

Run beneath the train until the hack prompt appears and activate it. When the train dives to ram you, jump toward the front to cling on. Climb the roof toward the rear, avoiding 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, and chainsaw weak point 1 while timing your jumps around the rotating beams. Wall-run to the orange pipe, follow it around the corner for weak point 2. Swing on the poles, jump to the wall, and chainsaw weak point 3. Bounce off the wall crack and ride the fans up to weak point 4. Hack the crushers in the next car and run through before they reset. The final car has a moving walkway: never stop running. The last weak point has saws in the center, so chainsaw straight through.

Flying Train roof route to rear

Quick reference: all 8 bosses at a glance

What's the best order to learn the parry?

The parry is optional for most fights but effectively required for the Helicopter and Combine. The Helicopter throws circular saws that can only be deflected to stun and ground it, and the Combine's blade parry is the only way to expose its underside weak point. Practice the timing on the Helicopter in Chapter 2, since the saws come at regular intervals and the arena gives you room to reposition. By the time you reach the Combine in Chapter 6, the muscle memory should be there.

The Bucket Wheel Excavator also has a parry moment at the very start, but it's tied to an achievement rather than being required to progress. Still worth doing.

Tips that apply to every fight

• Orange means chainsaw it. Every weak point and climbable surface in Motorslice is marked orange. If you're lost on a boss, look for orange.
• Re-anchor often. The chainsaw anchor lets you cling to surfaces mid-climb. Use it aggressively rather than waiting for a clean jump.
• Count your weak points. Knowing how many remain stops you from wandering the boss looking for something that's already destroyed.
• The boss IS the level. Motorslice bosses aren't enemies you fight from the ground. Treat each one as a platforming stage with a machine underneath.

For more on all the fights and the full story chapters, the Motorslice strategy guides on GAMES.GG have you covered. Motorslice sits squarely in the adventure games space, and if you enjoy this style of boss-as-level design, there's a lot more worth exploring in the genre.