diff --git a/Content.Server/_Wega/GameTicking/Rules/VampireRuleSystem.cs b/Content.Server/_Wega/GameTicking/Rules/VampireRuleSystem.cs
index 0cde823f21..24801b0b63 100644
--- a/Content.Server/_Wega/GameTicking/Rules/VampireRuleSystem.cs
+++ b/Content.Server/_Wega/GameTicking/Rules/VampireRuleSystem.cs
@@ -121,10 +121,13 @@ namespace Content.Server.GameTicking.Rules
                 {
                     if (TryComp<MetabolizerComponent>(organ.Id, out var metabolizer))
                     {
+                        // TODO: wega fork has ClearMetabolizerTypes/TryAddMetabolizerType methods, wylab doesn't
+                        // Using direct HashSet manipulation instead
                         if (TryComp<StomachComponent>(organ.Id, out _))
-                            _metabolism.ClearMetabolizerTypes(metabolizer);
+                            metabolizer.MetabolizerTypes?.Clear();
 
-                        _metabolism.TryAddMetabolizerType(metabolizer, VampireComponent.MetabolizerVampire);
+                        metabolizer.MetabolizerTypes ??= new();
+                        metabolizer.MetabolizerTypes.Add(VampireComponent.MetabolizerVampire);
                     }
                 }
             }
diff --git a/Content.Server/_Wega/Vampire/VampireSystem.Abilities.cs b/Content.Server/_Wega/Vampire/VampireSystem.Abilities.cs
index 0edd07ef3f..05fadf1328 100644
--- a/Content.Server/_Wega/Vampire/VampireSystem.Abilities.cs
+++ b/Content.Server/_Wega/Vampire/VampireSystem.Abilities.cs
@@ -220,7 +220,8 @@ public sealed partial class VampireSystem
         if (HasComp<StaminaComponent>(uid))
         {
             RemoveKnockdown(uid);
-            _stamina.RemoveStaminaDamage(uid);
+            // TODO: wega fork has RemoveStaminaDamage, wylab doesn't - implement stamina reset
+            // _stamina.RemoveStaminaDamage(uid);
         }
 
         if (component.CurrentBlood >= 200)
@@ -608,7 +609,8 @@ public sealed partial class VampireSystem
             var originalWalkSpeed = speedmodComponent.BaseWalkSpeed;
             var originalSprintSpeed = speedmodComponent.BaseSprintSpeed;
             var stealthComponent = _entityManager.GetComponent<StealthComponent>(uid);
-            if (TryComp(uid, out MobStateComponent? mobState) && mobState.CurrentState == MobState.PreCritical)
+            // NOTE: wega has PreCritical state, wylab doesn't - using Critical as fallback
+            if (TryComp(uid, out MobStateComponent? mobState) && mobState.CurrentState == MobState.Critical)
             {
                 args.Handled = true;
                 return;
@@ -866,7 +868,8 @@ public sealed partial class VampireSystem
         if (HasComp<StaminaComponent>(uid))
         {
             RemoveKnockdown(uid);
-            _stamina.RemoveStaminaDamage(uid);
+            // TODO: wega fork has RemoveStaminaDamage, wylab doesn't - implement stamina reset
+            // _stamina.RemoveStaminaDamage(uid);
         }
 
         if (component.CurrentBlood >= 200 && TryComp<DamageableComponent>(uid, out var damageableComponent))
@@ -1198,8 +1201,9 @@ public sealed partial class VampireSystem
             return;
         }
 
+        // TODO: wega has SyntheticOperatedComponent for android check, wylab doesn't
         if (HasComp<VampireComponent>(target) || HasComp<MindShieldComponent>(target) || HasComp<BibleUserComponent>(target)
-            || HasComp<SyntheticOperatedComponent>(target))
+            /* || HasComp<SyntheticOperatedComponent>(target) */)
         {
             _popup.PopupEntity(Loc.GetString("vampire-enthall-failed", ("target", target)), uid, uid);
             return;
@@ -1349,7 +1353,8 @@ public sealed partial class VampireSystem
         var targetCoords = Transform(target).Coordinates;
         _transform.SetCoordinates(uid, targetCoords);
         _transform.SetCoordinates(target, currentCoords);
-        _movementMod.TryUpdateMovementSpeedModDuration(target, MovementModStatusSystem.Slowdown, TimeSpan.FromSeconds(4f), 0.5f);
+        // TODO: wega has MovementModStatusSystem.Slowdown, wylab uses FlashSlowdown as substitute
+        _movementMod.TryUpdateMovementSpeedModDuration(target, MovementModStatusSystem.FlashSlowdown, TimeSpan.FromSeconds(4f), 0.5f);
         _hallucinations.StartHallucinations(target, "Hallucinations", TimeSpan.FromSeconds(15f), true, "MindBreaker");
 
         SubtractBloodEssence(uid, 15);
@@ -1385,7 +1390,8 @@ public sealed partial class VampireSystem
             if (HasComp<StaminaComponent>(thrallEntity))
             {
                 RemoveKnockdown(thrallEntity);
-                _stamina.RemoveStaminaDamage(thrallEntity.Owner);
+                // TODO: wega fork has RemoveStaminaDamage, wylab doesn't - implement stamina reset
+                // _stamina.RemoveStaminaDamage(thrallEntity.Owner);
             }
         }
 
@@ -1457,7 +1463,8 @@ public sealed partial class VampireSystem
             if (HasComp<NullRodOwnerComponent>(victimEntity) && !component.TruePowerActive)
                 continue;
 
-            _movementMod.TryUpdateMovementSpeedModDuration(victimEntity, MovementModStatusSystem.Slowdown, TimeSpan.FromSeconds(4f), 0.5f);
+            // TODO: wega has MovementModStatusSystem.Slowdown, wylab uses FlashSlowdown as substitute
+            _movementMod.TryUpdateMovementSpeedModDuration(victimEntity, MovementModStatusSystem.FlashSlowdown, TimeSpan.FromSeconds(4f), 0.5f);
             _hallucinations.StartHallucinations(victimEntity, "Hallucinations", TimeSpan.FromSeconds(30f), true, "MindBreaker");
         }
 
diff --git a/Content.Server/_Wega/Vampire/VampireSystem.cs b/Content.Server/_Wega/Vampire/VampireSystem.cs
index 93fba57b78..6fe07a68f9 100644
--- a/Content.Server/_Wega/Vampire/VampireSystem.cs
+++ b/Content.Server/_Wega/Vampire/VampireSystem.cs
@@ -195,7 +195,8 @@ public sealed partial class VampireSystem : SharedVampireSystem
             return false;
         }
 
-        if (!_interaction.InRangeUnobstructed(uid, args.Target, popup: true) || HasComp<SyntheticOperatedComponent>(args.Target))
+        // TODO: wega has SyntheticOperatedComponent for android check, wylab doesn't
+        if (!_interaction.InRangeUnobstructed(uid, args.Target, popup: true) /* || HasComp<SyntheticOperatedComponent>(args.Target) */)
             return false;
 
         IngestionBlockerComponent? blocker;
@@ -281,7 +282,8 @@ public sealed partial class VampireSystem : SharedVampireSystem
             }
 
             _admin.Add(LogType.Damaged, LogImpact.Low, $"{ToPrettyString(uid):user} drank {volumeToConsume}u of {ToPrettyString(args.Target):target}'s blood");
-            if (HasComp<HumanoidAppearanceComponent>(args.Target) && !HasComp<DnaModifiedComponent>(args.Target))
+            // TODO: wega has DnaModifiedComponent for genetics check, wylab doesn't
+            if (HasComp<HumanoidAppearanceComponent>(args.Target) /* && !HasComp<DnaModifiedComponent>(args.Target) */)
                 AddBloodEssence(uid, volumeToConsume * 0.95);
             SetBloodConsumedByVampire(uid, args.Target.Value, bloodAlreadyConsumed + volumeToConsume);