src/Prospect.Server.Api/Models/Title/ContractInfo.cs

@@ -72,6 +72,21 @@ public enum EYContractObjectiveType {
 	MAX = 8
 }
 
+public static class ContractObjectiveTypeExtensions {
+    // Objectives that can only be observed while a raid is running (kills, dead-drops,
+    // visiting an area, looting a container). The raid is hosted by the player's own
+    // client and there is no dedicated game server, so their progress is never reported
+    // to the backend (UpdatePlayerActiveContracts is never called). They are therefore
+    // auto-credited server-side, otherwise these contracts can never be completed.
+    // OwnNumOfItem is excluded (validated against the real stash) and so are the meta
+    // objectives FactionLevel / CompletedMission (validated from persisted player data).
+    public static bool IsRaidRuntime(this EYContractObjectiveType type) =>
+        type is EYContractObjectiveType.Kills
+             or EYContractObjectiveType.DeadDrop
+             or EYContractObjectiveType.VisitArea
+             or EYContractObjectiveType.LootContainer;
+}
+
 public enum EYContractDifficulty
 {
 	Invalid  = 0,

src/Prospect.Server.Api/Services/CloudScript/Functions/ClaimActiveContract.cs

@@ -131,16 +131,17 @@ public class ClaimActiveContract : ICloudScriptFunction<FYClaimCompletedActiveCo
                         break;
                     }
                 }
-            } else if (objective.Type == EYContractObjectiveType.Kills) {
-                // Kill objectives can't be tracked in a client-hosted raid (no dedicated
-                // game server reports kills). They are auto-credited on deploy
-                // (EnterMatchmakingMatch); accept them here even if a contract was
-                // activated before that so kill contracts remain completable.
+            } else if (objective.Type.IsRaidRuntime()) {
+                // Raid-runtime objectives (kills, dead-drops, visited areas, looted
+                // containers) can't be tracked in a client-hosted raid — no dedicated
+                // game server reports them, so their progress is never saved. They are
+                // auto-credited on deploy (EnterMatchmakingMatch); accept them here too
+                // (safety net for a contract activated after deploy) so these contracts
+                // remain completable instead of being stuck on "Objective not met".
                 remaining = 0;
             } else {
-                // NOTE: A game server must write the correct progress
-                // for other types of objectives.
-                // The objectives are mapped by array index.
+                // Meta objectives (FactionLevel / CompletedMission): validated from the
+                // persisted progress. The objectives are mapped by array index.
                 remaining -= targetContract.Progress[i];
             }
             if (remaining > 0) {

src/Prospect.Server.Api/Services/CloudScript/Functions/EnterMatchmakingMatch.cs

@@ -62,12 +62,17 @@ public class EnterMatchmakingMatchFunction : ICloudScriptFunction<FYEnterMatchAz
                 continue;
             }
             for (var i = 0; i < contract.Objectives.Length; i++) {
+                if (i >= contractActive.Progress.Length) {
+                    // Defensive: player progress array shorter than the objective list.
+                    break;
+                }
                 var objective = contract.Objectives[i];
-                // Kill objectives: the client-hosted raid has no dedicated game server
-                // to report per-kill progress to the backend, so kills would never be
-                // saved. Auto-credit them on deploy so the objective can be completed
-                // (mirrors the player-kill auto-credit done in ActivateContract).
-                if (objective.Type == EYContractObjectiveType.Kills) {
+                // Raid-runtime objectives (kills, dead-drops, visited areas, looted
+                // containers) are simulated inside the client-hosted raid; with no
+                // dedicated game server their progress is never reported to the backend,
+                // so they would never be saved. Auto-credit them on deploy so the
+                // objective persists and the station shows the contract as completable.
+                if (objective.Type.IsRaidRuntime()) {
                     contractActive.Progress[i] = objective.MaxProgress;
                     continue;
                 }