Pokemon Diamond and Pearl Phase 3: Cobble Badge Walkthrough

Clear Eterna's Galactic building, gain the Bicycle and Explorer Kit systems, then travel through Hearthome and Solaceon to Maylene. Open every section below for its exact map-level data and route checklist.

Phase Snapshot

Section Pages

Major Battles And Partners

Phase Checklist

1. Eterna Galactic Building and Commander Jupiter — Use Cut at the building entrance; clear both stair choices on each floor for trainers and items; read the sign clues; heal before 4F; defeat Jupiter; speak to the rescued owner; leave for the Bicycle Shop.
2. Explorer Kit, Fossils, Bicycle, and Route 206 — Finish the Underground Man's first tutorial; collect the Bicycle; choose either gear as needed; enter Cycling Road from Eterna; fight every cyclist while moving south; use Cut below the road for hidden Route 206 grass and items.
3. Wayward Cave and Mira — Cut into Route 206's lower area; clear the visible entrance and find Mira in the main cave; escort her to the exit; locate the separate hidden entrance beneath Cycling Road; in original Diamond/Pearl, stop at the Strength boulder; return after the Mine Badge with Strength and the Bicycle to clear B1F and catch Gible.
4. Route 207 and Mt. Coronet South — Use the Bicycle slope from Oreburgh; collect the Vs. Seeker and Dowsing Machine; sweep Route 207 trainers; enter Mt. Coronet; follow the ground-level east passage; watch the Cyrus scene; exit to Route 208.
5. Route 208, Hearthome City, and Amity Square — Clear Route 208's first-visit paths and visit the Berry Master's house; mark Fisherman Cody for Surf and Hiker Alexander for Rock Climb; rescue Buneary at Hearthome's entrance; visit the Contest Hall; receive the Poffin Case; tour Amity Square; prepare at the southeast gate; defeat Barry before Route 209.
6. Route 209, Hallowed Tower, and Lost Tower — Collect the Good Rod at the west end; clear every trainer and bridge branch; place the Odd Keystone in the ruined tower; enter Lost Tower; climb all five floors; receive Cleanse Tag and HM04 Strength; continue to Solaceon.
7. Solaceon Town and Solaceon Ruins — Visit Day Care and the News Press; enter the eastern ledges; follow the main inscription path to the bottom treasure room; backtrack through all dead-end chambers for Unown letters and items; exit toward Route 210.
8. Route 210 South and Cafe Cabin — Clear both tall-grass lanes; visit Cafe Cabin and fight all available customers; collect berries and hidden items; inspect the Psyduck blockade; turn east because the northern road remains closed.
9. Route 215 and Veilstone City — Clear every Route 215 bridge and Cut alcove; collect TM66 Payback from the Black Belt; enter Veilstone; heal and shop; obtain the Coin Case; inspect but do not yet raid Galactic facilities. Obtain Porygon later from the post-National-Dex Trophy Garden rotation, not from a Veilstone gift.
10. Veilstone Gym and Maylene — Bring Flying- and Psychic-type damage; push wall panels from both sides to align door gaps; clear the left, right, and center trainers; heal; save before Maylene; answer Lucario with Ground, Fire, or Fighting damage if Flying/Psychic coverage is unsafe.

Data Coverage

This phase owns 98 Diamond/Pearl source maps and publishes 148 encounter rows, 82 trainer rows, 138 visible/scripted items, and 38 hidden-item rows. Counts include explicit starter/rival branches and curated systems but never substitute Platinum encounters or story maps.