The third and final act of Contrast has some of the game's toughest puzzles. You'll not only need a firm grasp of how the game's shadow physics work, but the ability to guess how they might work in a given situation. Some of these challenges took us a while to figure out... but figure them out we did.
Related: Contrast: Act One Walkthrough
If you're stuck in Vincenzo's workshop or the lighthouse, that's understandable - Act 3 is much harder than the previous two. Follow this guide, and you'll see the credits roll in no time.
Immediately after Act 2 concludes, you'll find yourself standing in front of Didi and an open gate. Approach her and follow her until you reach the entrance to Vincenzo's workshop. Didi will mention the need for Luminaries, so before you proceed look to the right of the entrance for a Luminary within easy reach.
Climb the stairs across from the workshop entrance, then keep going straight until you come to the area behind the circus tent from Act 2 - you'll see a Luminary there. Pick it up, then return to the workshop. Use the 2 Luminaries to power Vincenzo's Amazing Solar Machine, then activate it with the switch nearby.
To proceed, you'll need to use the shadows cast by the Solar Machine to get a cannonball to the second floor - visible in the top right while operating the contraption.
Position the machine so that it creates a shallow ramp near the right side of the screen - the planet with multiple moons but no rings is best for this, as it has a protrusion that ends up near the floor.
Pick up the cannonball and shift into the wall with it, placing it at the top of the ramp you've created - you may need to adjust the machine slightly to allow yourself to get onto the ramp without jumping.
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