Assassin's Creed III Remastered Boston Underground Map: Full Obstacle Route
Use this Assassin's Creed III Remastered Boston Underground map to clear all seven checkpoints, lens puzzle orders, and valve combos in order.
The Boston Underground in Assassin's Creed III Remastered strings together lock puzzles, lens puzzles, and a lantern-powered lift into one continuous run, and one wrong symbol order can stall you for minutes. A clean Assassin's Creed III Remastered Boston Underground map is less about drawing corridor lines and more about knowing what each checkpoint asks of you before you arrive. This walkthrough rebuilds the route as seven numbered obstacles, using the exact stick inputs and lens placements recorded in GamePressure's Boston Underground chapter. Read it once, and the sewers stop being a guessing game.
What the Boston Underground Map Actually Covers
The chapter this route follows comes from GamePressure's Assassin's Creed III guide, published March 27, 2019, and it treats the Boston sewers as a sequence of seven numbered obstacles rather than a top-down floor plan. There are no coordinates to plot. What you get instead is a checkpoint list: each entry states what blocks the passage and which input, item, or shot clears it.
Read that way, the Assassin's Creed III Remastered Boston Underground map becomes a route memo you can scan between sections instead of a diagram you memorize. The value is in the order — the lantern has to be placed before the lever is pulled, and the barrels have to be shot before the corridor opens.
The Seven Checkpoints on the Boston Underground Map
The table below is the quick-reference half of this Assassin's Creed III Remastered Boston Underground map. Every row reflects the GamePressure walkthrough published March 27, 2019; where that guide gives an exact input sequence, the sequence is reproduced here.
| Checkpoint | What blocks you | Documented solution |
|---|---|---|
| Obstacle 1 | A locked gate with a two-stick lock | Push the left stick left twice, then the right stick right twice |
| Obstacle 2 | A barricade, then a lens puzzle | Shoot the gunpowder barrel behind the barricade, then set the lenses |
| Obstacle 3 | A valve-operated door | Rotate both valves in opposite directions until the door opens |
| Obstacle 4 | A dark shaft with a lantern elevator | Place the lantern on the platform, then work the lever and climb |
| Obstacle 5 | A wooden barrier, then a second lens puzzle | Shoot the barrel through the barrier, take the right corridor, set the lenses |
| Obstacle 6 | A third lens puzzle | Place the four lenses in the order listed below |
| Obstacle 7 | A final gate with valves | Left stick left, then right stick right three times |
Lock and Valve Inputs You Will Repeat
Three points on the route use rotating or directional inputs, and each has a fixed answer in the walkthrough. None of them require timing or reflex — they are pure sequence problems.
- Obstacle 1: left analog stick left twice, right analog stick right twice.
- Obstacle 3: keep turning both valves in opposite directions until the door opens. The source notes there are not many combinations, so testing combinations clears it quickly.
- Obstacle 7: move the left stick left once, then the right stick right three times.
If you are replaying the sequence, write the three patterns down. Mixing up the order of the two sticks is the most common way to burn time at these gates.
Three Lens Puzzles, Three Symbol Orders
Lens puzzles appear three separate times. The controls stay the same throughout: the left analog stick rotates the lens, and the jump button switches which lens is active. What changes is the arrangement you need.
- First lens puzzle (after obstacle 2's barricade): letter at the top, weight at the bottom, the circle with a cross on the left, the circle with an arrow on the right.
- Second lens puzzle (after obstacle 5's wooden barrier): feather on the left, crown above, man on the right, letter below.
- Third lens puzzle (obstacle 6): cross on the left, globe above, circle on the right, weight below.
Because the same four slots are being filled each time, it helps to say the order out loud as you rotate. The puzzle does not punish slow input — it punishes a swapped pair, and a swapped pair looks correct until you step back.
Obstacle 4: The Lantern Elevator Climb
This is the longest single stretch in the route, and it is the one place where order of operations matters more than input precision. Follow it step by step:
- Find the lever inside one of the rooms. It raises and lowers the elevator platform.
- Before touching the lever, place a lantern on the platform.
- Ride the elevator up, or climb the wall on the right to reach the raised lantern.
- On the upper floor, leave the light source and crawl through the narrow hole.
- Behind the hole, a climbable wall takes you higher.
- Jump across the two gaps to reach the room on the far side of the grate.
- Unlock the door, pick the lantern back up, and run forward.
Skipping the lantern placement is the failure state here — the platform needs a light source on it before the lever does anything useful for you.
Tips for Running This Assassin's Creed III Remastered Boston Underground Map
- Shoot first, climb later. Obstacles 2 and 5 both gate progress behind gunpowder barrels. The barrel at obstacle 2 sits on the far side of the barricade; at obstacle 5 you shoot through the wooden barrier and then take the right-hand corridor.
- Treat the checkpoint numbers as save points. Seven numbered obstacles give you natural break points, so if you need to step away, note which number you cleared last.
- Do not hunt for side rooms. The walkthrough is a linear obstacle chain; the alternate paths in the shaft section are part of the climb, not optional detours.
- Expect the puzzle density to spike late. Obstacles 5 and 6 sit back to back, which means two lens arrangements within a short stretch. Keeping the second and third orders separate in your head matters there.
- Use the source for visuals. The written route tells you the orders, but the original chapter pairs each step with a screenshot, which is the faster reference if a symbol shape is ambiguous on your screen.
For the game itself, the official Assassin's Creed III Remastered Steam store page is the place to confirm platform and edition details.
FAQ
How many obstacles are on the Assassin's Creed III Remastered Boston Underground map? Seven numbered obstacles, according to GamePressure's Boston Underground chapter published March 27, 2019. They run from the first two-stick lock to the final valve gate.
What is the lens order for the first lens puzzle in the Boston Underground? Letter at the top, weight at the bottom, the circle with a cross on the left, and the circle with an arrow on the right. Use the left stick to rotate and the jump button to change the active lens.
Do I need the lantern before pulling the lever at obstacle 4? Yes. The walkthrough places the lantern on the elevator platform before the lever is used, then has you climb the right-hand wall to reach the raised item.
Which analog stick inputs open the last gate? Move the left stick left once, then the right stick right three times. Turning the valves that way opens the door and completes the route.