**Overall Verdict:** Accept — complete and coherent task with a reachable GUI workflow, objective sampled-video rubric, and internally consistent reference evidence.

**Completeness Check:**
- Instruction: Complete — clearly defines the Mindustry GUI objective, allowed operations, completion state, and recording constraints.
- Inputs: Complete — includes a valid compressed `MSAV` map, generic reference guidance, switch legend, and recording instructions.
- Toolchain: Complete — specifies Mindustry v159, Windows native GUI control, OBS, evaluator dependencies, and native FFmpeg tools; licensing is practical.
- Reference output: Complete — includes reference screenshots, switch string, full MP4, current checker PASS JSON, provenance JSON, and the evaluator package.
- Rubric: Complete — defines the checker version, scope, sampled-frame rules, 60-second threshold, required fields, and exit-code contract.

**File and Task Reachability:**
The attachment set is `partially_reachable` for review-tooling reasons, while the end-to-end task is `reachable`. I inspected all manifest files: the text and JSON files, all PNG evidence, the valid non-encrypted ZIP and its 23 members, the zlib-compressed `MSAV` header and representative payload, and the complete MP4 container. Manifest byte counts match every downloaded file. The checker asset hashes match `CHECKER_MANIFEST.json`; the MP4 duration, dimensions, size, and hash are consistent with the submitted evaluation and provenance records. The correct reference image visibly contains the required Impact Reactor HUD and battery layout, while the self-test images support the documented failed attempt.

The reviewer environment lacks native FFmpeg/Python, so the MP4 could not be decoded to inspect representative video frames directly, and the `MSAV` was not fully reconstructed block-by-block. The host-produced checker result reports PASS with scope `VIDEO_SAMPLED_FINAL_STATE_60S`, checker version `3.0.0`, 60 matching seconds, and exit code 0; provenance binds the execution to the submitted video and checker assets. Uploaded source programs were read only as untrusted text and not executed.

License keys, accounts, tokens, and other credentials are not required from the contributor.  
Confidential, proprietary, or internal material may be evaluated as submitted evidence without requiring additional disclosure.

**Special Screening:**
None.

**Recommended Changes:**
The submission provides a clear workflow, usable inputs, protected evaluator materials, and a defensible objective evaluation path. No contributor changes are required.