Quick Answer
IRON NEST has four ending achievements tied to the White Shells finale. For A City in Celebration, use a non-lethal or propaganda-type round on the city, with PRPG as the dependable starting choice. For A City Subdued, use a chemical-type round on the city. For A City Silent, use ATMC on the city. For The Road Not Taken, attack High Command and eliminate artillery that can retaliate. Approach each outcome on its own attempt, check the named achievement at the end, and return to the finale before pursuing the next ending.
Ending Conditions
| Ending | Checked value |
|---|---|
| A City in Celebration | Use PRPG on the city. |
| A City Subdued | Use a chemical-type round on the city. |
| A City Silent | Use ATMC on the city. |
| The Road Not Taken | Attack High Command and eliminate artillery that can retaliate. |
Step-by-Step Route
- Reach the White Shells finale and decide which one of the four named achievements you are pursuing before making the decisive choice. A single clear intention makes the run easier to follow and keeps the ending condition from being mixed with another path.
- For a city ending, keep your attention on the city as the target. The three city outcomes are separated by the type of round used, so choosing the outcome first is more useful than cycling through ammunition without a plan.
- Choose A City in Celebration when you want the non-lethal or propaganda route. Use PRPG, a non-lethal propaganda round, on the city.
- Confirm that PRPG is selected before committing the Celebration shot. Keeping the round and city target paired is the cleanest way to pursue this ending without introducing a choice associated with another outcome.
- Choose A City Subdued when you want the coercive city outcome. Use a chemical-type round on the city, then continue the finale while keeping that attempt dedicated to Subdued.
- Check the selected round by its displayed type rather than choosing by a round name that merely sounds suitable. The important condition for this route is the chemical-type category and the city target.
- Choose A City Silent when you want the destructive city outcome. Use ATMC on the city, so pair ATMC with the city and keep the rest of the attempt focused on that result.
- After any city-focused choice, play through to the ending and look for the exact achievement name. The cinematic tone may suggest what happened, but the named achievement gives you an unambiguous record of which outcome you reached.
- Pursue The Road Not Taken as a separate branch rather than treating it as a fourth city-ammunition choice. Attack High Command and be ready to deal with the forces that respond.
- Once you have turned against High Command, identify and eliminate artillery that can retaliate. Do not stop after the opening act of defiance; the retaliating artillery is part of the core condition for this ending.
- Finish the branch and confirm that The Road Not Taken appears. If another achievement appears, review whether your target, round type, or response to the retaliating artillery drifted from the intended condition.
- Return to the start of the finale before pursuing another ending, then select a different achievement and repeat only that route. Working through the four outcomes one at a time makes missing entries easy to spot in your achievement list.
Detailed Walkthrough
Choose one ending before the decisive action
Objective: Turn the four-outcome finale into one clear task by selecting the achievement you want before you choose a target or round.
Three endings ask you to act on the city, while The Road Not Taken turns your attention toward High Command. That first split is the easiest way to organize the finale. If you are pursuing Celebration, Subdued, or Silent, write down both the ending name and its required round category before acting. If you are pursuing The Road Not Taken, set city ammunition aside and prepare for the High Command branch. This simple division prevents the most common kind of confusion: remembering the desired ending but carrying out an action from a different path. It also gives you a useful checkpoint if the expected achievement does not appear. You can review the target and category first rather than replaying the entire campaign in your head. Treat each finale attempt as one self-contained route, with one ending name, one target plan, and one result to check.
Watch for
- Choosing ammunition first and only afterward trying to decide which city outcome it should produce.
- Treating The Road Not Taken as another city shot instead of a branch directed at High Command.
- Trying to cover two ending conditions in one attempt and losing track of which action shaped the result.
Resolve the three city outcomes cleanly
Objective: Match Celebration, Subdued, or Silent to the checked round condition and keep the city as the target for that attempt.
A City in Celebration is the non-lethal or propaganda route. Use PRPG for this route. A City Subdued uses a chemical-type round on the city. Here, the category matters: read the in-game type and make sure the chosen round belongs to the chemical path before firing. A City Silent uses ATMC on the city. Keeping these three pairs in a short list—Celebration with non-lethal or propaganda and PRPG, Subdued with chemical-type, Silent with ATMC—removes most of the mental load. The city remains the shared target, but the selected round condition changes the outcome. Once you commit, continue until the game presents the result and achievement. Do not rely only on the mood of the final scene. Compare the achievement name with the route you intended, then mark that ending complete before beginning another attempt.
Watch for
- Remembering that Celebration is non-lethal but forgetting to direct the chosen round at the city.
- Selecting a round for Subdued by its name or appearance without confirming that it is chemical-type.
- Using ATMC but changing away from the city target during the Silent attempt.
Take The Road Not Taken
Objective: Break from the city routes, attack High Command, and eliminate artillery that can retaliate.
The Road Not Taken has a different rhythm from the three city outcomes because its core condition changes both allegiance and target priority. Begin by attacking High Command. That action opens the branch, but it is not the whole job: artillery capable of retaliating must also be eliminated. Stay alert to the response and work through the retaliating artillery rather than assuming the first strike has already secured the ending. The route is easier to understand when treated as two connected goals—turn against High Command, then remove the artillery threat. Keep your attention on those goals and avoid slipping back into one of the city-shot plans. When the branch concludes, check for The Road Not Taken by name. Its achievement summary describes a spared city and a road no one else will walk, which fits the choice to reject the city outcomes and confront High Command instead.
Watch for
- Attacking High Command and then overlooking artillery that remains able to retaliate.
- Diverting the attempt back toward the city after beginning the High Command branch.
- Assuming the opening attack alone completes the ending without checking the final named achievement.
Confirm the result and finish the set
Objective: Use the exact achievement names to track completed endings and give every missing outcome its own fresh finale attempt.
The four achievement names form a ready-made completion list: A City in Celebration, A City Subdued, A City Silent, and The Road Not Taken. After the ending resolves, compare the unlocked name with that list and note which route remains. If you miss the intended achievement, return to the condition table and review one decision at a time. For a city route, check the round category and city target. For The Road Not Taken, check the attack on High Command and whether every artillery unit capable of retaliating was eliminated. This review is faster and more useful than changing everything on the next attempt. Once the result is recorded, restart the finale from a point before the decisive choice and move to a different ending. By keeping the attempts separate, the final cleanup becomes a straightforward four-item achievement hunt rather than a guessing game.
Watch for
- Marking an ending complete from memory without checking the achievement name.
- Repeating the same route accidentally because the completed and missing outcomes were not written down.
- Changing the target and round category together after a miss instead of correcting the one choice that drifted.
Mistakes to Avoid
- Mixing spoilers from several routes into one attempt. Pick one achievement, follow only its target and round condition, and verify that result before moving on.
- Aiming a correct city-ending round at the wrong target. Celebration, Subdued, and Silent all require the selected route round to be used on the city.
- Treating every city outcome as a simple lethal-versus-non-lethal choice. The checked routes are distinct: propaganda or non-lethal for Celebration, chemical-type for Subdued, and ATMC for Silent.
- Forgetting the dependable Celebration starting point. PRPG is the checked choice for this route, so it is the clearest choice for a focused Celebration attempt.
- Choosing the Subdued route from a round's dramatic name instead of confirming that the game presents it as chemical-type.
- Replacing ATMC with a merely powerful-looking round for A City Silent. The checked core condition specifically names ATMC on the city.
- Firing on the city while pursuing The Road Not Taken. That ending begins by attacking High Command and belongs in its own separate attempt.
- Stopping the High Command branch too early. After the attack, eliminate artillery that can retaliate before expecting The Road Not Taken.
- Identifying the result only from the final scene. Check the exact ending achievement so your completion list reflects what the game actually awarded.
- Starting another route without noting the ending already completed. A four-name checklist prevents repeat runs and makes the remaining achievement obvious.
Achievements
A City in Celebration
The achievement describes a city that comes out to meet you. Pursue it by using a non-lethal or propaganda-type round on the city, with PRPG as the stable common starting choice, then check for the achievement by name when the ending resolves.
A City Subdued
The achievement describes a city that kneels and calls the result peace. Pursue it by using a chemical-type round on the city. Keep this attempt separate from the other city choices and confirm the exact achievement at the conclusion.
A City Silent
The achievement describes a city wiped from the map. Pursue it with ATMC on the city, the checked choice for this ending, and continue until A City Silent is shown as the result.
The Road Not Taken
The achievement describes a city spared and a road no one else will walk. Attack High Command, eliminate artillery that can retaliate, finish the branch, and verify The Road Not Taken in your achievement list.
Run Checklist
- 01Accept that the guide contains full ending spoilers before continuing.
- 02Reach the White Shells finale before choosing the outcome to pursue.
- 03Write down one target achievement for the current attempt.
- 04For Celebration, pair the city with a non-lethal or propaganda-type round and begin with PRPG.
- 05For Subdued, confirm a chemical-type round and use it on the city.
- 06For Silent, select ATMC and use it on the city.
- 07For The Road Not Taken, attack High Command instead of the city.
- 08Eliminate artillery that can retaliate during the High Command branch.
- 09Continue far enough to see the ending result and named achievement.
- 10Mark the unlocked achievement on the four-ending list.
- 11Return to a point before the finale choice before beginning another route.
- 12Repeat with one of the remaining ending conditions until all four names are checked.
