diff --git a/src/server/packets/GetGachaInfoCsReq.ts b/src/server/packets/GetGachaInfoCsReq.ts
index 273525f..2b50f09 100644
--- a/src/server/packets/GetGachaInfoCsReq.ts
+++ b/src/server/packets/GetGachaInfoCsReq.ts
@@ -13,7 +13,7 @@ export default async function handle(session: Session, packet: Packet) {
             endTime: unix() * 2,
             newbieGachaCnt: 10,
             todayGachaCnt: 1,
-            gachaId: 763, // TODO: Figure out gachaIDs
+            gachaId: 502, // TODO: Figure out gachaIDs
             detailWebview: "https://omfgdogs.com/"
         }],
         todaySingleGachaMaxCnt: 10,
diff --git a/src/server/packets/JoinLineupCsReq.ts b/src/server/packets/JoinLineupCsReq.ts
index ea3740f..dee8d04 100644
--- a/src/server/packets/JoinLineupCsReq.ts
+++ b/src/server/packets/JoinLineupCsReq.ts
@@ -25,6 +25,7 @@ export default async function handle(session: Session, packet: Packet) {
         slot,
         sp: 10000
     };
+    if (body.extraLineupType) lineup.extraLineupType = body.extraLineupType;
     session.player.setLineup(lineup);
     session.player.save();
 
diff --git a/src/server/packets/StartChallengeCsReq.ts b/src/server/packets/StartChallengeCsReq.ts
new file mode 100644
index 0000000..80e6085
--- /dev/null
+++ b/src/server/packets/StartChallengeCsReq.ts
@@ -0,0 +1,59 @@
+import { ChallengeStatus, ExtraLineupType, StartChallengeCsReq, StartChallengeScRsp } from "../../data/proto/StarRail";
+import Packet from "../kcp/Packet";
+import Session from "../kcp/Session";
+
+// StartChallengeCsReq { challengeId: 101 }
+export default async function handle(session: Session, packet: Packet) {
+    const body = packet.body as StartChallengeCsReq;
+
+    // TODO: This packet is just a base
+
+    session.send("StartChallengeScRsp", {
+        retcode: 0,
+        curChallenge: {
+            challengeId: body.challengeId,
+            deadAvatarNum: 0,
+            extraLineupType: ExtraLineupType.LINEUP_CHALLENGE,
+            rounds: 1,
+            status: ChallengeStatus.CHALLENGE_DOING,
+            killMonsterList: [{
+                monsterId: 1001010,
+                killNum: 1,
+            }]
+        },
+        maze: {
+            // ? Data from MappingInfoExcelTable
+            id: 30101,
+            mapEntryId: 1000,
+            floor: {
+                floorId: 20121001,
+                scene: {
+                    planeId: 20121,
+                    entryId: 1000,
+                    floorId: 20121001,
+                    gameModeType: 1,
+                    entityList: [{
+                        entityId: 10010101,
+                        npcMonster: {
+                            monsterId: 8013010,
+                            worldLevel: 1,
+                        },
+                        groupId: 11,
+                        motion: {
+                            pos: {
+                                x: 0,
+                                y: 100,
+                                z: 0,
+                            },
+                            rot: {
+                                x: 0,
+                                y: 0,
+                                z: 0
+                            }
+                        },
+                    }]
+                }
+            }
+        }
+    } as StartChallengeScRsp);
+}
\ No newline at end of file