From the title and from the puzzle presentation, it's pretty clear that each clue was broken into three parts. (And then each list of first/second/third parts were alphabetized.) We can put the clues back together from context and solve them fairly easily (a few are slightly ambiguous, without much confirmation, but they're generally specific enough so there's one answer per):
| Part 1 | Part 2 | Part 3 | Answer |
|---|---|---|---|
| 3D shape... (3) | ...with four... (2) | ...faces (7) | TETRAHEDRON |
| Area... (2) | ...in darts... (3) | ...scoring 50 points (4) | BULLSEYE |
| Follower... (4) | ...of "mantis"... (2) | ...or "fairy" (5) | SHRIMP |
| Green material... (2) | ...that's Superman's... (3) | ...weakness (9) | KRYPTONITE |
| Place in a game... (6) | ...where progress... (1) | ...is automatically saved (3) | CHECKPOINT |
| Poem... (1) | ...which coined... (2) | ..."chortle" (5) | JABBERWOCKY |
| Swinging... (2) | ...weight often used... (8) | ...to measure time (3) | PENDULUM |
Given that we don't see how to use the numbers after each clue in relation to the answer, we might try summing them (given that the next part of the puzzle has lines like "Sum = 8 (?/11)", going from "Sum = 8" to "Sum = 14"). Fortunately, the sums are 8-14 once each.
| Part 1 | Part 2 | Part 3 | Answer | Sum | (?/number) |
|---|---|---|---|---|---|
| Poem... (1) | ...which coined... (2) | ..."chortle" (5) | JABBERWOCKY | 8 | ?/11 |
| Area... (2) | ...in darts... (3) | ...scoring 50 points (4) | BULLSEYE | 9 | ?/8 |
| Place in a game... (6) | ...where progress... (1) | ...is automatically saved (3) | CHECKPOINT | 10 | ?/10 |
| Follower... (4) | ...of "mantis"... (2) | ...or "fairy" (5) | SHRIMP | 11 | ?/6 |
| 3D shape... (3) | ...with four... (2) | ...faces (7) | TETRAHEDRON | 12 | ?/11 |
| Swinging... (2) | ...weight often used... (8) | ...to measure time (3) | PENDULUM | 13 | ?/8 |
| Green material... (2) | ...that's Superman's... (3) | ...weakness (9) | KRYPTONITE | 14 | ?/10 |
Confirming our answers somewhat, the number after the slash is always the answer length. We haven't used the appearance of the ?, or the (7) (7) (7). We now have to realize that in addition to adding the numbers after each clue up (as we did), we have to use them as the ? and index into the clue answer, to get three 7-letter words (the (7) (7) (7)). Doing this, we get:
| Part 1 | Part 2 | Part 3 | Answer | Sum | (?/number) | Letter 1 | Letter 2 | Letter 3 |
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 5 | JABBERWOCKY | 8 | ?/11 | J | A | E |
| 2 | 3 | 4 | BULLSEYE | 9 | ?/8 | U | L | L |
| 6 | 1 | 3 | CHECKPOINT | 10 | ?/10 | P | C | E |
| 4 | 2 | 5 | SHRIMP | 11 | ?/6 | I | H | M |
| 3 | 2 | 7 | TETRAHEDRON | 12 | ?/11 | T | E | E |
| 2 | 8 | 3 | PENDULUM | 13 | ?/8 | E | M | N |
| 2 | 3 | 9 | KRYPTONITE | 14 | ?/10 | R | Y | T |
Reading down each column, we get JUPITER ALCHEMY ELEMENT. Looking this up, we find that planets were each associated with different metals in (European/Middle-Eastern) alchemy; Jupiter was associated with TIN, the puzzle answer.
Authors' Notes
This puzzle is intentionally relatively easy because it's last in the unlock order. It wasn't that hard to have the idea for (or more accurately, to take the idea for from a partially overheard solve of Shardhunt's The State Puzzle), and it wasn't that hard to construct once I had the idea (all that was needed was to find words with the right sets of three letters, with a significant amount of freedom in their placements; it was then possible to take words where relatively unambiguous clues could be written).