diff --git a/assets/main.db b/assets/main.db
index 5dc965d..43d4ec8 100644
Binary files a/assets/main.db and b/assets/main.db differ
diff --git a/internal/handler/achievement/pagingaccomplishedlist.go b/internal/handler/achievement/pagingaccomplishedlist.go
new file mode 100644
index 0000000..3612137
--- /dev/null
+++ b/internal/handler/achievement/pagingaccomplishedlist.go
@@ -0,0 +1,45 @@
+package achievement
+
+import (
+	apiachievement "honoka-chan/internal/handler/api/achievement"
+	"honoka-chan/internal/middleware"
+	"honoka-chan/internal/router"
+	achievementschema "honoka-chan/internal/schema/achievement"
+	"honoka-chan/internal/session"
+	honokautils "honoka-chan/internal/utils"
+
+	"github.com/gin-gonic/gin"
+)
+
+const pagingAccomplishedPageSize = 10
+
+func pagingAccomplishedList(ctx *gin.Context) {
+	ss := session.Get(ctx)
+	defer ss.Finalize()
+
+	req := achievementschema.PagingAccomplishedListReq{}
+	err := honokautils.ParseRequestData(ctx, &req)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	grouped, err := apiachievement.ListVisibleAccomplishedAchievements(ss)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	items := grouped[req.FilterCategoryID]
+	start := min(max(req.FromCount, 0), len(items))
+
+	end := min(start+pagingAccomplishedPageSize, len(items))
+
+	ss.Respond(achievementschema.PagingAccomplishedListResp{
+		ResponseData: items[start:end],
+		ReleaseInfo:  []any{},
+		StatusCode:   200,
+	})
+}
+
+func init() {
+	router.AddHandler("main.php", "POST", "/achievement/pagingAccomplishedList", middleware.Common, pagingAccomplishedList)
+}
diff --git a/internal/handler/api/achievement/achievement.go b/internal/handler/api/achievement/achievement.go
new file mode 100644
index 0000000..fd6161f
--- /dev/null
+++ b/internal/handler/api/achievement/achievement.go
@@ -0,0 +1,30 @@
+package achievement
+
+import (
+	honokautils "honoka-chan/internal/utils"
+
+	"github.com/gin-gonic/gin"
+)
+
+var achievementFilterCategoryList = []int{
+	1, // 重要
+	3, // 挑战
+	4, // 每日
+	5, // 期间限定
+	6, // 8周年限定/全世界5000万人突破纪念
+	7, // 回忆画廊
+	8, // 9周年限定
+	9, // 连携课题
+}
+
+func AchievementApi(ctx *gin.Context, action string) (res any, err error) {
+	switch action {
+	case "unaccomplishList":
+		res, err = unaccomplishList()
+	case "initialAccomplishedList":
+		res, err = initialAccomplishedList(ctx)
+	default:
+		err = honokautils.NewUnimplementedActionError("achievement", action)
+	}
+	return res, err
+}
diff --git a/internal/handler/api/achievement/common.go b/internal/handler/api/achievement/common.go
new file mode 100644
index 0000000..3b2e71b
--- /dev/null
+++ b/internal/handler/api/achievement/common.go
@@ -0,0 +1,118 @@
+package achievement
+
+import (
+	"fmt"
+	achievementapischema "honoka-chan/internal/schema/api/achievement"
+	"honoka-chan/internal/session"
+	"sort"
+	"strings"
+	"time"
+)
+
+type achievementRow struct {
+	AchievementID               int `xorm:"achievement_id"`
+	AchievementFilterCategoryID int `xorm:"achievement_filter_category_id"`
+	DisplayFlag                 int `xorm:"display_flag"`
+	StartDate                   string
+	EndDate                     *string
+}
+
+func ListVisibleAccomplishedAchievements(ss *session.Session) (map[int][]achievementapischema.AchievementListItem, error) {
+	var achievementList []achievementRow
+	err := ss.MainEng.Table("achievement_m").
+		Cols("achievement_id,achievement_filter_category_id,display_flag,start_date,end_date").
+		Where("display_flag = ?", 1).
+		Find(&achievementList)
+	if err != nil {
+		return nil, err
+	}
+
+	now := time.Now()
+	grouped := make(map[int][]achievementapischema.AchievementListItem, len(achievementFilterCategoryList))
+	for _, achievement := range achievementList {
+		if !isAchievementVisible(now, achievement.StartDate, achievement.EndDate) {
+			continue
+		}
+
+		grouped[achievement.AchievementFilterCategoryID] = append(
+			grouped[achievement.AchievementFilterCategoryID],
+			achievementapischema.AchievementListItem{
+				AchievementID:  achievement.AchievementID,
+				Count:          1,
+				IsAccomplished: true,
+				InsertDate:     normalizeAchievementDate(achievement.StartDate),
+				EndDate:        normalizeAchievementDatePtr(achievement.EndDate),
+				RemainingTime:  "",
+				IsNew:          false,
+				ForDisplay:     achievement.DisplayFlag != 0,
+				RewardList: []achievementapischema.AchievementRewardItem{
+					{
+						AddType: 3001,
+						ItemID:  4,
+						Amount:  1,
+					},
+				},
+			},
+		)
+	}
+
+	for filterCategoryID, items := range grouped {
+		sort.Slice(items, func(i, j int) bool {
+			return items[i].InsertDate > items[j].InsertDate
+		})
+		grouped[filterCategoryID] = items
+	}
+
+	return grouped, nil
+}
+
+func normalizeAchievementDate(value string) string {
+	if value == "" {
+		return "1970-01-01 00:00:00"
+	}
+
+	return strings.ReplaceAll(value, "/", "-")
+}
+
+func normalizeAchievementDatePtr(value *string) *string {
+	if value == nil || *value == "" {
+		return nil
+	}
+
+	normalized := normalizeAchievementDate(*value)
+	return &normalized
+}
+
+func isAchievementVisible(now time.Time, startDate string, endDate *string) bool {
+	start, err := parseAchievementTime(startDate)
+	if err == nil && now.Before(start) {
+		return false
+	}
+
+	if endDate == nil || *endDate == "" {
+		return true
+	}
+
+	end, err := parseAchievementTime(*endDate)
+	if err != nil {
+		return true
+	}
+
+	return !now.After(end)
+}
+
+func parseAchievementTime(value string) (time.Time, error) {
+	layouts := []string{
+		"2006/01/02 15:04:05",
+		"2006/1/2 15:04:05",
+	}
+
+	for _, layout := range layouts {
+		parsed, err := time.ParseInLocation(layout, value, time.Local)
+		if err == nil {
+			return parsed, nil
+		}
+	}
+
+	return time.Time{}, fmt.Errorf("invalid achievement time: %s", value)
+}
diff --git a/internal/handler/api/achievement/initialaccomplishedlist.go b/internal/handler/api/achievement/initialaccomplishedlist.go
new file mode 100644
index 0000000..4fd4c5b
--- /dev/null
+++ b/internal/handler/api/achievement/initialaccomplishedlist.go
@@ -0,0 +1,44 @@
+package achievement
+
+import (
+	achievementapischema "honoka-chan/internal/schema/api/achievement"
+	"honoka-chan/internal/session"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+func initialAccomplishedList(ctx *gin.Context) (res any, err error) {
+	ss := session.Get(ctx)
+
+	grouped, err := ListVisibleAccomplishedAchievements(ss)
+	if err != nil {
+		return nil, err
+	}
+
+	listData := make([]achievementapischema.UnaccomplishListData, 0, len(achievementFilterCategoryList))
+	for _, filterCategoryID := range achievementFilterCategoryList {
+		achievementItems := grouped[filterCategoryID]
+		if achievementItems == nil {
+			achievementItems = []achievementapischema.AchievementListItem{}
+		} else {
+			if len(achievementItems) > 5 {
+				achievementItems = achievementItems[:5]
+			}
+		}
+
+		listData = append(listData, achievementapischema.UnaccomplishListData{
+			FilterCategoryID: filterCategoryID,
+			AchievementList:  achievementItems,
+			Count:            len(grouped[filterCategoryID]),
+			IsLast:           true,
+		})
+	}
+
+	return achievementapischema.UnaccomplishListResp{
+		Result:     listData,
+		Status:     200,
+		CommandNum: false,
+		TimeStamp:  time.Now().Unix(),
+	}, nil
+}
diff --git a/internal/handler/api/achievement/unaccomplishlist.go b/internal/handler/api/achievement/unaccomplishlist.go
new file mode 100644
index 0000000..a78c7a0
--- /dev/null
+++ b/internal/handler/api/achievement/unaccomplishlist.go
@@ -0,0 +1,27 @@
+package achievement
+
+import (
+	achievementapischema "honoka-chan/internal/schema/api/achievement"
+	"time"
+)
+
+func unaccomplishList() (res any, err error) {
+	listData := make([]achievementapischema.UnaccomplishListData, 0, len(achievementFilterCategoryList))
+	for i := range achievementFilterCategoryList {
+		listData = append(listData, achievementapischema.UnaccomplishListData{
+			FilterCategoryID: achievementFilterCategoryList[i],
+			AchievementList:  []achievementapischema.AchievementListItem{},
+			Count:            0,
+			IsLast:           true,
+		})
+	}
+
+	res = achievementapischema.UnaccomplishListResp{
+		Result:     listData,
+		Status:     200,
+		CommandNum: false,
+		TimeStamp:  time.Now().Unix(),
+	}
+
+	return res, nil
+}
diff --git a/internal/handler/api/api.go b/internal/handler/api/api.go
index 624300d..776b9ec 100644
--- a/internal/handler/api/api.go
+++ b/internal/handler/api/api.go
@@ -2,6 +2,7 @@ package api
 
 import (
 	"honoka-chan/internal/constant"
+	"honoka-chan/internal/handler/api/achievement"
 	"honoka-chan/internal/handler/api/album"
 	"honoka-chan/internal/handler/api/award"
 	"honoka-chan/internal/handler/api/background"
@@ -57,6 +58,8 @@ func api(ctx *gin.Context) {
 		switch v.Module {
 		case "album":
 			result, err = album.AlbumApi(ctx, v.Action)
+		case "achievement":
+			result, err = achievement.AchievementApi(ctx, v.Action)
 		case "award":
 			result, err = award.AwardApi(ctx, v.Action)
 		case "background":
diff --git a/internal/handler/handler.go b/internal/handler/handler.go
index f703198..e5b8458 100644
--- a/internal/handler/handler.go
+++ b/internal/handler/handler.go
@@ -1,6 +1,7 @@
 package handler
 
 import (
+	_ "honoka-chan/internal/handler/achievement"
 	_ "honoka-chan/internal/handler/album"
 	_ "honoka-chan/internal/handler/announce"
 	_ "honoka-chan/internal/handler/api"
diff --git a/internal/schema/achievement/pagingaccomplishedlist.go b/internal/schema/achievement/pagingaccomplishedlist.go
new file mode 100644
index 0000000..3bee977
--- /dev/null
+++ b/internal/schema/achievement/pagingaccomplishedlist.go
@@ -0,0 +1,19 @@
+package achievementschema
+
+import achievementapischema "honoka-chan/internal/schema/api/achievement"
+
+type PagingAccomplishedListReq struct {
+	Module           string `json:"module"`
+	Action           string `json:"action"`
+	TimeStamp        int64  `json:"timeStamp"`
+	Mgd              int    `json:"mgd"`
+	FilterCategoryID int    `json:"filter_category_id"`
+	CommandNum       string `json:"commandNum"`
+	FromCount        int    `json:"from_count"`
+}
+
+type PagingAccomplishedListResp struct {
+	ResponseData []achievementapischema.AchievementListItem `json:"response_data"`
+	ReleaseInfo  []any                                      `json:"release_info"`
+	StatusCode   int                                        `json:"status_code"`
+}
diff --git a/internal/schema/api/achievement/unaccomplishlist.go b/internal/schema/api/achievement/unaccomplishlist.go
new file mode 100644
index 0000000..809103e
--- /dev/null
+++ b/internal/schema/api/achievement/unaccomplishlist.go
@@ -0,0 +1,33 @@
+package achievementapischema
+
+type AchievementRewardItem struct {
+	AddType int `json:"add_type"`
+	ItemID  int `json:"item_id"`
+	Amount  int `json:"amount"`
+}
+
+type AchievementListItem struct {
+	AchievementID  int                     `json:"achievement_id"`
+	Count          int                     `json:"count"`
+	IsAccomplished bool                    `json:"is_accomplished"`
+	InsertDate     string                  `json:"insert_date"`
+	EndDate        *string                 `json:"end_date"`
+	RemainingTime  string                  `json:"remaining_time"`
+	IsNew          bool                    `json:"is_new"`
+	ForDisplay     bool                    `json:"for_display"`
+	RewardList     []AchievementRewardItem `json:"reward_list"`
+}
+
+type UnaccomplishListData struct {
+	FilterCategoryID int                   `json:"filter_category_id"`
+	AchievementList  []AchievementListItem `json:"achievement_list"`
+	Count            int                   `json:"count"`
+	IsLast           bool                  `json:"is_last"`
+}
+
+type UnaccomplishListResp struct {
+	Result     []UnaccomplishListData `json:"result"`
+	Status     int                    `json:"status"`
+	CommandNum bool                   `json:"commandNum"`
+	TimeStamp  int64                  `json:"timeStamp"`
+}