Hello Fellow modders, who know this better then me by bounds

You have multiple unclosed tags. When you open a tag, say <Backstory>, it is imperative that you close it with </Backstory> when you are finished with it. If you don't close it properly, the game doesn't know it should stop reading the content as backstory. This can cause a lot of issues when the xml is read by the game.

Here's the XML with the tags fixed, and everything appears to function in-game now:

  <UnitType InternalName="Champion_Naja">
    <DisplayName>Shi the Snake Queen</DisplayName>
    <CreatureType>Beast</CreatureType>
    <CanBeDesigned>0</CanBeDesigned>
    <IsSovereign>0</IsSovereign>
    <AllowGrouping>0</AllowGrouping>
    <HasWages>0</HasWages>
    <IsChampion>1</IsChampion>
    <IsSovereign>0</IsSovereign>
    <SpawnRating>1</SpawnRating>
    <NPCSpawnLikelihood>1000000</NPCSpawnLikelihood>
    <GameModifier>
      <ModType>Resource</ModType>
      <Attribute>Unrest</Attribute>
      <Value>-5</Value>
      <Provides>-5% Unrest in the city this unit is in</Provides>
    </GameModifier>
    <LevelMilestone InternalName="L1">
      <Level>1</Level>
      <UnitStat_Accuracy>85</UnitStat_Accuracy>
      <UnitStat_Attack_Pierce>6</UnitStat_Attack_Pierce>
      <UnitStat_ChanceToCrit>3</UnitStat_ChanceToCrit>
      <UnitStat_CombatSpeed>24</UnitStat_CombatSpeed>
      <UnitStat_Defense_Pierce>3</UnitStat_Defense_Pierce>
      <UnitStat_HitPoints>39</UnitStat_HitPoints>
      <UnitStat_Intelligence>1</UnitStat_Intelligence>
      <UnitStat_Moves>4</UnitStat_Moves>
    </LevelMilestone>
    <SelectedAbilityBonusOption>Venomous2</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>ImmuneToCounterattack</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Dodge1</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Dodge2</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Endurance1</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Vicious_Level</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>CallousedHide</SelectedAbilityBonusOption>
    <Treasure>
      <Liklihood>100</Liklihood>
      <GameModifier>
        <ModType>Resource</ModType>
        <StrVal/>
        <Attribute>Gold</Attribute>
        <BoolVal1/>
        <Value>10</Value>
      </GameModifier>
    </Treasure>
    <Backstory>Shi is the snake queen, her prime consort is the leech king. Baring many children, none are prized as much as her first born duaghter, The snake queen is a vicious opponent who strikes from the shadows unlike her mate. </Backstory>
    <Medallions InternalName="">
      <All>M_Serpent_Naja_Card.png</All>
    </Medallions>
    <AlwaysInTileCenter>0</AlwaysInTileCenter>
    <AnimationPack>SandSerpantAnimationPack</AnimationPack>
    <BattleAnimationBehavior>Melee</BattleAnimationBehavior>
    <ClothMapScale>1.3</ClothMapScale>
    <Color_Skin>108,104,88,255</Color_Skin>
    <CutSceneDataPack>LurkUnitCutscenePack</CutSceneDataPack>
    <EyeTexture>gfx/eyes/male_brown_eye.png</EyeTexture>
    <InfoCardBackground>BG29_Swamp</InfoCardBackground>
    <MaxScaleMainMap>1.2</MaxScaleMainMap>
    <MaxScaleTacticalMap>1</MaxScaleTacticalMap>
    <ModelPath>Gfx\HKB\Monsters\M_SandSerpent_Mesh_01.hkb</ModelPath>
    <ModelScale>1.7</ModelScale>
    <OnHitParticleName>Bloody_OnHit</OnHitParticleName>
    <SkeletonPath>Gfx\HKB\Monsters\M_Serpent_Skeleton_01.hkb
</SkeletonPath>
    <SoundPack>SoundPack_Snake</SoundPack>
    <Texture_Skin>Gfx\HKB\Monsters\M_Serpents_Texture_01.png</Texture_Skin>
  </UnitType>
  <UnitType InternalName="Champion_HoarderSpider">
    <DisplayName>Ame the Spider Queen</DisplayName>
    <CreatureType>Beast</CreatureType>
    <Class>Adventurer</Class>
    <CreatureType>Twisted</CreatureType>
    <Unique>1</Unique>
    <CanBeDesigned>0</CanBeDesigned>
    <WageOverride>1</WageOverride>
    <IsNPC>1</IsNPC>
    <IsChampion>1</IsChampion>
    <IsSovereign>0</IsSovereign>
    <SpawnRating>5</SpawnRating>
    <NPCSpawnLikelihood>10000000000</NPCSpawnLikelihood>
    <GameModifier>
      <ModType>Resource</ModType>
      <Attribute>Unrest</Attribute>
      <Value>-5</Value>
      <Provides>-5% Unrest in the city this unit is in</Provides>
    </GameModifier>
    <LevelMilestone InternalName="L1">
      <Level>1</Level>
      <UnitStat_Accuracy>80</UnitStat_Accuracy>
      <UnitStat_Attack_Pierce>16</UnitStat_Attack_Pierce>
      <UnitStat_CombatSpeed>25</UnitStat_CombatSpeed>
      <UnitStat_ChanceToCrit>1</UnitStat_ChanceToCrit>
      <UnitStat_HitPoints>18</UnitStat_HitPoints>
      <UnitStat_Moves>4</UnitStat_Moves>
    </LevelMilestone>
    <SelectedAbilityBonusOption>PathOfTheAssassin</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>ImmuneToCounterattack</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Maul</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>VitalStrike1</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>VitalStrike2</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Tough</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Executioner1</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Executioner2</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Quick</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Spell_LightningForm</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Dodge1</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Spell_Shadowbolt</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>CallousedHide</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Vicious</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Endurance</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Large</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Daze</SelectedAbilityBonusOption>
    <Treasure>
      <Liklihood>100</Liklihood>
      <GameModifier>
        <ModType>Resource</ModType>
        <StrVal/>
        <Attribute>Gold</Attribute>
        <BoolVal1/>
        <Value>16</Value>
      </GameModifier>
    </Treasure>
    <Backstory> Ame is the Spider Queen, Mother of all spiders, and right hand maiden to Shi the Snake Queen, and notable consort to the Leech Lord.</Backstory>
    <Medallions InternalName="">
      <All>M_Spider_BlackWidow.png</All>
    </Medallions>
    <AnimationPack>SpiderAnimationPack</AnimationPack>
    <BattleAnimationBehavior>Melee</BattleAnimationBehavior>
    <ClothMapScale>2.0</ClothMapScale>
    <Color_Skin>13,13,14,255</Color_Skin>
    <CutSceneDataPack>LargeSpiderUnitCutscenePack</CutSceneDataPack>
    <EyeTexture>gfx/eyes/male_brown_eye.png</EyeTexture>
    <InfoCardBackground>BG29_Swamp</InfoCardBackground>
    <MaxScaleMainMap>0.72</MaxScaleMainMap>
    <ModelPath>gfx/hkb/Monsters/M_Spider_Mesh_01.hkb</ModelPath>
    <ModelScale>2.0</ModelScale>
    <MovingSFX>TEMP_KnightMarching1</MovingSFX>
    <OnAttackParticleName>Spider_Attack</OnAttackParticleName>
    <OnHitParticleName>Spider_Hit</OnHitParticleName>
    <SkeletonPath>Gfx\HKB\Monsters\M_Spider_Skeleton_01.hkb</SkeletonPath>
    <SoundPack>SoundPack_LargeSpider</SoundPack>
    <Texture_Skin>M_Spider_Texture_01.png</Texture_Skin>
  </UnitType>
  <QuestDef InternalName="Quest_Give_me_Unit_147201345509">
    <DisplayName>Call of the wolf lord</DisplayName>
    <Description>Within the cave, you see, the wolf lord, sleeping, you wake him, do you let him follow you?</Description>
    <IsStartingPointQuest>0</IsStartingPointQuest>
    <ShortTextAccept>Yes</ShortTextAccept>
    <ShortTextDeny>No</ShortTextDeny>
    <RewardText>Wolf Lord</RewardText>
    <QuestClass>Minor</QuestClass>
    <Repeatable>0</Repeatable>
    <TriggerType>TurnNumber</TriggerType>
    <TriggerOrigin>EventLocation</TriggerOrigin>
    <TriggerData>17</TriggerData>
    <TriggerChance>100000</TriggerChance>
    <PostTriggerChance>10000</PostTriggerChance>
    <SpawnRating>1</SpawnRating>
    <Image>K_Adventure.png</Image>
    <Treasure>
      <GameModifier InternalName="Reward1">
        <ModType>Unit</ModType>
        <Attribute>UnitJoinArmy</Attribute>
        <StrVal>Champion_GreatWolf</StrVal>
        <UnitClass>Champion</UnitClass>
        <Value>1</Value>
      </GameModifier>
    </Treasure>
    <QuestObjectiveDef>
      <ObjectiveID>0</ObjectiveID>
      <QuestEnd>1</QuestEnd>
    </QuestObjectiveDef>
  </QuestDef>
  <UnitType InternalName="Champion_GreatWolf">
    <DisplayName>Duke the Wolf Lord</DisplayName>
    <CreatureType>Beast</CreatureType>
    <CreatureType>Champion</CreatureType>
    <CanBeDesigned>0</CanBeDesigned>
    <IsSovereign>0</IsSovereign>
    <IsNPC>1</IsNPC>
    <IsChampion>1</IsChampion>
    <HasWages>0</HasWages>
    <SpawnRating>3</SpawnRating>
    <LevelMilestone InternalName="L1">
      <Level>1</Level>
      <UnitStat_Accuracy>90</UnitStat_Accuracy>
      <UnitStat_Attack_Pierce>12</UnitStat_Attack_Pierce>
      <UnitStat_ChanceToCrit>9</UnitStat_ChanceToCrit>
      <UnitStat_CombatSpeed>32</UnitStat_CombatSpeed>
      <UnitStat_Defense_Pierce>5</UnitStat_Defense_Pierce>
      <UnitStat_HitPoints>27</UnitStat_HitPoints>
      <UnitStat_Intelligence>4</UnitStat_Intelligence>
      <UnitStat_Moves>5</UnitStat_Moves>
    </LevelMilestone>
    <SelectedAbilityBonusOption>Trigger_Fear</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Counterattack</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Spell_Howl</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>Endurance1</SelectedAbilityBonusOption>
    <SelectedAbilityBonusOption>PackTactics</SelectedAbilityBonusOption>
    <Treasure>
      <Liklihood>100</Liklihood>
      <GameModifier>
        <ModType>GiveItem</ModType>
        <StrVal/>
        <Attribute>Loot_WolfPelt</Attribute>
        <BoolVal1>1</BoolVal1>
        <Value/>
      </GameModifier>
    </Treasure>
    <Backstory>Not all wolves grow old and pass on, Duke is the Lord of the wolves, He is a massive animal with large jaws. Known to bite travelers in half, He can be bound for long periods of time with the promise of ice cold....</Backstory>
    <Medallions InternalName="">
      <All>M_Wolf_GreatWolf_Card.png</All>
    </Medallions>
    <AnimationPack>WolfAnimationPack</AnimationPack>
    <BattleAnimationBehavior>Melee</BattleAnimationBehavior>
    <Color_Skin>175,160,155</Color_Skin>
    <CutSceneDataPack>WolfUnitCutscenePack</CutSceneDataPack>
    <EyeTexture>gfx/eyes/male_brown_eye.png</EyeTexture>
    <InfoCardBackground>BG21_Plains</InfoCardBackground>
    <ModelPath>gfx/hkb/Monsters/M_Wolf_Mesh_01.hkb</ModelPath>
    <ModelScale>2</ModelScale>
    <OnAttackParticleName>Bite_Attack</OnAttackParticleName>
    <OnHitParticleName>Bloody_OnHit</OnHitParticleName>
    <SkeletonPath>Gfx\HKB\Monsters\M_Wolf_Skeleton_01.hkb</SkeletonPath>
    <SoundPack>SoundPack_Wolf1</SoundPack>
    <TacticalModelScale>2</TacticalModelScale>
    <Texture_Skin>M_Wolf_Texture_01.png</Texture_Skin>
  </UnitType>

I recommend that you use an editor that has highlighting to help you remember (or find these) simple xml errors.

e.g. notepad++ is one such program (it is free to use), there are others

I just got notepad Have had a few days still learning it thank you very much parrot.

Keep working on it Odinlowbane, you picked up a lot of interest in Duke after his limited Alpha appearance in Children of the Storm 

Yeah, I updated to COS1d and now I miss Duke.

But Duke is OP (game on hard with Him is to easy).

Lol okay, Ill try balancing him, My question is, would you like to see him bigger? different model such as a large wolf? and reduce damage and health would that help balance?

Deleted and Moved to other thread