diff --git a/src/docs/repentogon_changes/Isaac.lua b/src/docs/repentogon_changes/Isaac.lua
index 995a446..42ff123 100644
--- a/src/docs/repentogon_changes/Isaac.lua
+++ b/src/docs/repentogon_changes/Isaac.lua
@@ -434,6 +434,7 @@ end
 ---
 ---More information can be obtained on [repentogon.com](https://repentogon.com/Isaac.html#rendertoworld)
 ---@param pos Vector
+---@return Vector
 function Isaac.RenderToWorld(pos)
 end
 
@@ -441,4 +442,4 @@ end
 ---@param name string
 ---@return string
 function Isaac.LoadModDataFromFolder(name)
-end
\ No newline at end of file
+end
diff --git a/src/docs/repentogon_changes/ItemPool.lua b/src/docs/repentogon_changes/ItemPool.lua
index 26e50bc..f887b3f 100644
--- a/src/docs/repentogon_changes/ItemPool.lua
+++ b/src/docs/repentogon_changes/ItemPool.lua
@@ -64,6 +64,7 @@ end
 ---@param advancedSearch? boolean @default: false. Setting to `true` allows you to make use of the `filter` parameter.
 ---@param filter? ItemPoolType[] @default: {}. Normally acts as a blacklist of unwanted item pools, however setting `isWhitelist` to `true` turns it into a list from which to choose from.
 ---@param isWhitelist? boolean @default: false
+---@return ItemPoolType
 function ItemPool:GetRandomPool(rng, advancedSearch, filter, isWhitelist)
 end
 
@@ -119,6 +120,10 @@ end
 function ItemPool:ResetCollectible(collectibleType)
 end
 
+---@param itemPoolType ItemPoolType
+function ItemPool:SetLastPool(itemPoolType)
+end
+
 ---@class PoolItems
 ---@field itemID CollectibleType? @default: `CollectibleType.COLLECTIBLE_NULL`
 ---@field name string? @Alternative to `itemID`
@@ -144,4 +149,4 @@ end
 ---@param poolType ItemPoolType
 ---@param poolItems PoolItems | PoolItems[] @Can be either a single Lua `PoolItem` object or an array of them. All field names are case insensitive
 function ItemPool:RemoveTemporaryCollectible(poolType, poolItems)
-end
\ No newline at end of file
+end
diff --git a/src/docs/repentogon_changes/Options.lua b/src/docs/repentogon_changes/Options.lua
index f85339a..66f72b0 100644
--- a/src/docs/repentogon_changes/Options.lua
+++ b/src/docs/repentogon_changes/Options.lua
@@ -3,6 +3,7 @@
 ---@field HushPanicStateFix boolean
 ---@field PreventModUpdates boolean
 ---@field QuickRoomClear boolean
+---@field StatHUDPlanetarium boolean
 ---@field AimLockEnabled boolean
 ---@field AscentVoiceOver boolean
 ---@field BossHPOnBottom boolean
@@ -21,4 +22,4 @@
 ---@field WindowHeight integer
 ---@field WindowPosX integer
 ---@field WindowPosY integer
----@field WindowWidth integer
\ No newline at end of file
+---@field WindowWidth integer
diff --git a/src/docs/repentogon_changes/entity/Entity.lua b/src/docs/repentogon_changes/entity/Entity.lua
index 05a838a..65ac89b 100644
--- a/src/docs/repentogon_changes/entity/Entity.lua
+++ b/src/docs/repentogon_changes/entity/Entity.lua
@@ -85,6 +85,10 @@ end
 function Entity:GetCollisionCapsule(vector)
 end
 
+---@return ColorParams[]
+function Entity:GetColorParams()
+end
+
 ---If the entity recently took damage with the DAMAGE_COUNTDOWN `DamageFlag`, 
 ---this returns how many more frames must pass before they can take damage with 
 ---the DAMAGE_COUNTDOWN `DamageFlag` again.
@@ -236,6 +240,7 @@ end
 ---@param position Vector? @default: `self.Position`
 ---@param color Color? @default: `Color.Default`
 ---@param scale? number @default: `1.0`
+---@return EntityEffect, EntityEffect
 function Entity:MakeGroundPoof(position, color, scale)
 end
 
@@ -412,4 +417,4 @@ end
 
 ---@return boolean
 function Entity:CanDevolve()
-end
\ No newline at end of file
+end
diff --git a/src/docs/repentogon_changes/entity/EntityPlayer.lua b/src/docs/repentogon_changes/entity/EntityPlayer.lua
index ead0d82..f80922a 100644
--- a/src/docs/repentogon_changes/entity/EntityPlayer.lua
+++ b/src/docs/repentogon_changes/entity/EntityPlayer.lua
@@ -713,7 +713,7 @@ end
 ---@param position? Vector @default: `self.Position`
 ---@param rng? RNG @default: PlayerDropRNG
 ---@param itemPool? ItemPoolType @default: `ItemPoolType.POOL_NULL`.
----@overload fun(pickup: EntityPickup, rng?: RNG, itemPool?: ItemPoolType)
+---@overload fun(self:EntityPlayer, pickup: EntityPickup, rng?: RNG, itemPool?: ItemPoolType)
 function EntityPlayer:SalvageCollectible(collectible, position, rng, itemPool)
 end
 
@@ -1608,4 +1608,4 @@ end
 ---Effect duration of R U A Wizard? pill effect. Starts at `900` when the effect is activated.
 ---@param timer integer
 function EntityPlayer:SetRUAWizardTimer(timer)
-end
\ No newline at end of file
+end
diff --git a/src/docs/repentogon_new/ColorParams.lua b/src/docs/repentogon_new/ColorParams.lua
index 0c350e8..bbea8c3 100644
--- a/src/docs/repentogon_new/ColorParams.lua
+++ b/src/docs/repentogon_new/ColorParams.lua
@@ -3,12 +3,11 @@ local ColorParams = {}
 
 ---@param color Color
 ---@param priority integer
----@param duration1 integer
----@param duration2 integer
+---@param duration integer
 ---@param fadeout boolean
 ---@param shared boolean
 ---@return ColorParams
-function _G.ColorParams(color, priority, duration1, duration2, fadeout, shared)
+function _G.ColorParams(color, priority, duration, fadeout, shared)
 end
 
 ---@return Color
diff --git a/src/docs/repentogon_new/FXLayers.lua b/src/docs/repentogon_new/FXLayers.lua
index 64f272c..8ee8ca2 100644
--- a/src/docs/repentogon_new/FXLayers.lua
+++ b/src/docs/repentogon_new/FXLayers.lua
@@ -1,6 +1,6 @@
 ---@class FXLayers
 local FXLayers = {}
 
----@param colorMod ColorModifier
+---@param colorMod Color
 function FXLayers:AddPoopFx(colorMod)
-end
\ No newline at end of file
+end
diff --git a/src/docs/repentogon_new/entityconfig/EntityConfigPlayer.lua b/src/docs/repentogon_new/entityconfig/EntityConfigPlayer.lua
index 3f5023d..7aefd76 100644
--- a/src/docs/repentogon_new/entityconfig/EntityConfigPlayer.lua
+++ b/src/docs/repentogon_new/entityconfig/EntityConfigPlayer.lua
@@ -77,6 +77,13 @@ end
 function EntityConfigPlayer:GetModdedCoopMenuSprite()
 end
 
+---Returns the Sprite used for a modded character's character select screen.
+---
+---Note that this Sprite is shared by other characters from the same mod - there is an animation with the same name as this character.
+---@return Sprite? `nil` for vanilla characters, or characters with no corresponding animation.
+function EntityConfigPlayer:GetModdedMenuBackgroundSprite()
+end
+
 ---Returns the sprite for a modded character's game over screen (ie, their name).
 ---
 ---Note that this sprite is shared by other characters from the same mod - there is an animation with the same name as this character.
diff --git a/src/docs/repentogon_new/savestate/GridEntitiesSaveStateVector.lua b/src/docs/repentogon_new/savestate/GridEntitiesSaveStateVector.lua
index eb31c8a..d79fb59 100644
--- a/src/docs/repentogon_new/savestate/GridEntitiesSaveStateVector.lua
+++ b/src/docs/repentogon_new/savestate/GridEntitiesSaveStateVector.lua
@@ -1,6 +1,9 @@
 ---@class GridEntitiesSaveStateVector
 local GridEntitiesSaveStateVector = {}
 
+function GridEntitiesSaveStateVector:Clear()
+end
+
 ---TODO: Document me!
 ---@param index integer
 ---@return GridEntityDesc
diff --git a/src/docs/vanilla/BitSet128.lua b/src/docs/vanilla/BitSet128.lua
index b3de90b..10d871a 100644
--- a/src/docs/vanilla/BitSet128.lua
+++ b/src/docs/vanilla/BitSet128.lua
@@ -8,6 +8,21 @@
 ---@operator shl(BitSet128): BitSet128
 ---@operator shr(BitSet128): BitSet128
 
+local BitSet128 = {}
+
+---@param bitPosition integer
+---@return boolean
+function BitSet128:Get(bitPosition)
+end
+
+---@param bitPosition integer
+---@param state boolean
+function BitSet128:Set(bitPosition, state)
+end
+
+function BitSet128:__tostring()
+end
+
 ---@param l? integer @default = `0`
 ---@param h? integer @default = `0`
 ---@return BitSet128
diff --git a/src/docs/vanilla/Font.lua b/src/docs/vanilla/Font.lua
index fe0c815..a8381ba 100644
--- a/src/docs/vanilla/Font.lua
+++ b/src/docs/vanilla/Font.lua
@@ -93,7 +93,7 @@ end
 function Font:Load(FilePath)
 end
 
----@param MissingCharacter string
+---@param MissingCharacter integer
 function Font:SetMissingCharacter(MissingCharacter)
 end