Phase 2 section
Pokemon Diamond and Pearl Eterna Gym and Gardenia Walkthrough
Forest Badge Find four hidden Gym trainers in order, then defeat Gardenia's Cherubi, Turtwig, and Roserade. Exact Diamond/Pearl encounters, every sourced trainer, visible and hidden items, puzzle notes, boss teams, and completion checks.
Phase 2 Forest Badge Route 204, Floaroma, Valley Windworks, Eterna Forest, Eterna City, and Gardenia. 02 / 11 
Find four hidden Gym trainers in order, then defeat Gardenia's Cherubi, Turtwig, and Roserade. This standalone section joins the route plan to the original Diamond/Pearl map, encounter, trainer, item, and script data; Platinum tables are not substituted.
Source maps
Eterna Gym Entrance and Eterna Gym.
Version discipline
Rows merge only when Diamond and Pearl are identical, and each row carries D/P game markers. Version-exclusive species, mascot encounters, swarms, Radar slots, and GBA insertion slots keep their own labeled rows.
Route Plan
Bring Flying, Fire, Bug, Ice, or Poison coverage; locate and defeat all four trainers in their forced sequence; heal if needed; save before Gardenia; preserve the fastest strong attacker for Roserade.
- Gardenia's Roserade is much faster and stronger than her opening pair; status and Flying-type attacks keep it from sweeping.
- The Forest Badge enables Cut, immediately opening Eterna Galactic Building, Old Chateau access, Cycling Road side paths, and many regional shortcuts.
Exact pret map constants (2)
MAP_ETERNA_GYM_ENTRANCE MAP_ETERNA_GYM
Wild Pokémon
No random wild encounter archive or curated static/gift row applies to this section. This is expected for some buildings, story rooms, and Gym interiors.
Trainers
Field order follows the map's object-event order. Full teams include explicit held items and moves when trdata defines them; cash rewards use the in-engine final-party-slot level and trainer-class multiplier formula.
| Trainer | Route order / placement | Full team | Reward | Access requirement | Optional / rematch note |
|---|---|---|---|---|---|
 Leader GardeniaLeader Gardenia • source ID 315 | Eterna Gym • scripted | ₽2,640 | Scripted story trigger; complete the local objective described in the route plan. | Major or story battle; not a VS Seeker rematch row. | |
 Lass CarolineLass • source ID 324 | Eterna Gym • scripted | ₽240 | Scripted story trigger; complete the local objective described in the route plan. | Script-triggered battle; not treated as an ordinary field rematch. | |
 Aroma Lady JennaAroma Lady • source ID 259 | Eterna Gym • scripted | ₽480 | Scripted story trigger; complete the local objective described in the route plan. | Script-triggered battle; not treated as an ordinary field rematch. | |
| Aroma Lady AngelaAroma Lady • source ID 260 | Eterna Gym • scripted |
| ₽544 | Scripted story trigger; complete the local objective described in the route plan. | Script-triggered battle; not treated as an ordinary field rematch. |
 Beauty LindsayBeauty • source ID 348 | Eterna Gym • scripted |
| ₽952 | Scripted story trigger; complete the local objective described in the route plan. | Script-triggered battle; not treated as an ordinary field rematch. |
Items
| Item | Version | Type | Area / exact direction | Coordinate / script | Requirement | Source |
|---|---|---|---|---|---|---|
| TM86 | Diamond / Pearl | NPC / scripted gift | Eterna Gym: Receive this TM from the Gym Leader immediately after the badge victory. | NPC (15, 3); script 3 | Defeat the Gym Leader; this is part of the one-time badge reward. | script bank 72 |
Hidden Items
No type-2 hidden-item event is present in the source maps assigned to this section.
Puzzles, Warps, And Switches
- Each defeated trainer gives a clue and causes the next trainer to appear. Search the northwest gap, southwest rocks, central trees, and northeast corner in the order the clues indicate.
Boss Strategy And Partners
Leader GardeniaLeader Gardenia • source ID 315Full team
CherubiGrass Knot / Leech Seed / Growth / Safeguard
TurtwigGrass Knot / Razor Leaf / Withdraw / Reflect
Roseradeholds Sitrus Berry • Grass Knot / Magical Leaf / Poison Sting / Stun Spore
Danger notes
Roserade is much faster and stronger than the two setup members and can punish neutral targets.
Practical counters
Flying, Fire, Ice, Bug, or Poison pressure works. Staravia, Monferno, Ponyta, and Golbat are practical answers.
Completion Checklist
- Complete the currently reachable part of this route plan: Bring Flying, Fire, Bug, Ice, or Poison coverage; locate and defeat all four trainers in their forced sequence; heal if needed; save before Gardenia; preserve the fastest strong attacker for Roserade.
- Review all 0 encounter rows across the per-area tables, including game markers, method band, time-of-day rates, levels, and each conditional requirement; mark conditional rows for their stated revisit.
- Defeat or deliberately skip every currently reachable trainer row; leave HM-, story-, or National-Dex-gated rows checked only after their access requirement is met.
- Collect currently reachable visible/scripted items and berry trees, use the Dowsing Machine for reachable hidden rows, and retain every explicitly gated row for the named cleanup visit.
- Resolve every currently available puzzle note, boss branch, and partner scene before opening the next section.
Sources And Validation
pret/pokediamondat commit038cccaed5de8f013875bc5d734f912d1de08e0f:map_header.c, D/P encounter archives,trdata.json, zone events, script archives, item tables, and trainer graphics.- Encounter slots were decoded from exact 424-byte D/P members and cross-checked against Gen IV slot behavior; the 0x6C pair is day, morning uses base slots, and 0x74 is night.
- Coordinates remain visible as QA anchors, while each hidden row also provides a plain-English map-region instruction.
- Generation-wide systems that are not tied to a normal map archive—Honey Trees, Great Marsh daily rolls, Trophy Garden, fossils, Pal Park, and event items—are explicitly curated in their dedicated system pages.
Dex quick links