Mapped stats a bit

mappings/net/minecraft/reference/Achievements.mapping

@@ -12,6 +12,10 @@ CLASS none/np net/minecraft/reference/Achievements
 	FIELD K FULL_BEACON Lnone/no;
 	FIELD L EXPLORE_ALL_BIOMES Lnone/no;
 	FIELD M OVERPOWERED Lnone/no;
+	FIELD a lowestY I
+	FIELD b lowestX I
+	FIELD c highestY I
+	FIELD d highestX I
 	FIELD e ACHIEVEMENTS Ljava/util/List;
 	FIELD f OPEN_INVENTORY Lnone/no;
 	FIELD g MINE_WOOD Lnone/no;

mappings/net/minecraft/stat/Stat.mapping

@@ -10,6 +10,7 @@ CLASS none/nu net/minecraft/stat/Stat
 	METHOD <init> (Ljava/lang/String;Lnone/fa;Lnone/nv;)V
 		ARG 0 id
 		ARG 1 name
+	METHOD d isAchievement ()Z
 	METHOD e getName ()Lnone/fa;
 	METHOD equals (Ljava/lang/Object;)Z
 		ARG 0 other

mappings/net/minecraft/stat/achievement/Achievement.mapping

@@ -1,4 +1,35 @@
 CLASS none/no net/minecraft/stat/achievement/Achievement
+	FIELD a displayY I
+	FIELD b displayX I
+	FIELD c parent Lnone/no;
+	FIELD d displayStack Lnone/aeq;
+	FIELD k description Ljava/lang/String;
+	FIELD m isSpecial Z
+	METHOD <init> (Ljava/lang/String;Ljava/lang/String;IILnone/aeo;Lnone/no;)V
+		ARG 0 id
+		ARG 1 name
+		ARG 2 displayY
+		ARG 3 displayX
+		ARG 4 displayItem
+		ARG 5 parent
+	METHOD <init> (Ljava/lang/String;Ljava/lang/String;IILnone/aeq;Lnone/no;)V
+		ARG 0 id
+		ARG 1 name
+		ARG 2 displayY
+		ARG 3 displayX
+		ARG 4 displayStack
+		ARG 5 parent
+	METHOD <init> (Ljava/lang/String;Ljava/lang/String;IILnone/akw;Lnone/no;)V
+		ARG 0 id
+		ARG 1 name
+		ARG 2 displayY
+		ARG 3 displayX
+		ARG 4 displayBlock
+		ARG 5 parent
+	METHOD a setSeperate ()Lnone/no;
+	METHOD b setSpecial ()Lnone/no;
 	METHOD c register ()Lnone/no;
+	METHOD d isAchievement ()Z
 	METHOD e getName ()Lnone/fa;
+	METHOD g isSpecial ()Z
 	METHOD h register ()Lnone/nu;