diff --git a/asm/include/overlay_29_02301FBC.inc b/asm/include/overlay_29_02301FBC.inc
deleted file mode 100644
index e0cc2e49..00000000
--- a/asm/include/overlay_29_02301FBC.inc
+++ /dev/null
@@ -1,10 +0,0 @@
-#pragma once
-.public CanLearnIqSkill
-.public DisableIqSkill
-.public EnableIqSkill
-.public GetPerformanceFlagWithChecks
-.public GetSpeciesIqSkill
-.public IqSkillFlagTest
-.public IsMonsterLoneOutlaw
-.public MIN_IQ_EXCLUSIVE_MOVE_USER
-.public MIN_IQ_ITEM_MASTER
diff --git a/asm/include/overlay_29_023021F0.inc b/asm/include/overlay_29_023021F0.inc
new file mode 100644
index 00000000..e1dac9cc
--- /dev/null
+++ b/asm/include/overlay_29_023021F0.inc
@@ -0,0 +1,2 @@
+#pragma once
+.public UpdateIqSkills
diff --git a/asm/overlay_29_02301FBC.s b/asm/overlay_29_02301FBC.s
deleted file mode 100644
index c25027ac..00000000
--- a/asm/overlay_29_02301FBC.s
+++ /dev/null
@@ -1,176 +0,0 @@
-	.include "asm/macros.inc"
-	.include "overlay_29_02301FBC.inc"
-
-	.text
-
-	arm_func_start UpdateIqSkills
-UpdateIqSkills: ; 0x02301FBC
-	stmdb sp!, {r4, r5, r6, lr}
-	mov r4, r0
-	ldrb r0, [r4, #6]
-	mov r6, #0
-	cmp r0, #0
-	str r6, [r4, #0x9c]
-	beq _02302118
-	str r6, [r4, #0xa0]
-	str r6, [r4, #0xa4]
-	b _0230202C
-_02301FE4:
-	ldrsh r0, [r4, #2]
-	and r1, r6, #0xff
-	bl GetSpeciesIqSkill
-	mov r5, r0
-	cmp r5, #0xff
-	beq _02302034
-	ldrsh r0, [r4, #0xe]
-	mov r1, r5
-	bl CanLearnIqSkill
-	cmp r0, #0
-	beq _02302028
-	mov r1, r5
-	add r0, r4, #0x90
-	bl EnableIqSkill
-	mov r1, r5
-	add r0, r4, #0x9c
-	bl EnableIqSkill
-_02302028:
-	add r6, r6, #1
-_0230202C:
-	cmp r6, #0x19
-	blt _02301FE4
-_02302034:
-	ldr r0, _023021E8 ; =MIN_IQ_EXCLUSIVE_MOVE_USER
-	ldrsh r1, [r4, #0xe]
-	ldrsh r0, [r0]
-	cmp r1, r0
-	bge _02302068
-	add r0, r4, #0x9c
-	mov r1, #0x17
-	bl IqSkillFlagTest
-	cmp r0, #0
-	beq _02302068
-	add r0, r4, #0x9c
-	mov r1, #0x17
-	bl DisableIqSkill
-_02302068:
-	mov r0, r4
-	bl IsMonsterLoneOutlaw
-	cmp r0, #0
-	bne _0230208C
-	ldr r0, _023021EC ; =MIN_IQ_ITEM_MASTER
-	ldrsh r1, [r4, #0xe]
-	ldrsh r0, [r0]
-	cmp r1, r0
-	bge _023020AC
-_0230208C:
-	add r0, r4, #0x9c
-	mov r1, #0x16
-	bl IqSkillFlagTest
-	cmp r0, #0
-	beq _023020AC
-	add r0, r4, #0x9c
-	mov r1, #0x16
-	bl DisableIqSkill
-_023020AC:
-	add r0, r4, #0x9c
-	mov r1, #0x15
-	bl IqSkillFlagTest
-	cmp r0, #0
-	beq _023020CC
-	add r0, r4, #0x9c
-	mov r1, #0x15
-	bl DisableIqSkill
-_023020CC:
-	add r0, r4, #0x9c
-	mov r1, #0x14
-	bl IqSkillFlagTest
-	cmp r0, #0
-	beq _023020EC
-	add r0, r4, #0x9c
-	mov r1, #0x14
-	bl DisableIqSkill
-_023020EC:
-	add r0, r4, #0x9c
-	mov r1, #0xb
-	bl IqSkillFlagTest
-	cmp r0, #0
-	beq _0230210C
-	add r0, r4, #0x9c
-	mov r1, #0xb
-	bl DisableIqSkill
-_0230210C:
-	mov r0, #2
-	strb r0, [r4, #0xa8]
-	ldmia sp!, {r4, r5, r6, pc}
-_02302118:
-	str r6, [r4, #0xa0]
-	str r6, [r4, #0xa4]
-	b _02302174
-_02302124:
-	ldrsh r0, [r4, #2]
-	and r1, r6, #0xff
-	bl GetSpeciesIqSkill
-	mov r5, r0
-	cmp r5, #0xff
-	beq _0230217C
-	ldrsh r0, [r4, #0xe]
-	mov r1, r5
-	bl CanLearnIqSkill
-	cmp r0, #0
-	beq _02302170
-	mov r1, r5
-	add r0, r4, #0x90
-	bl IqSkillFlagTest
-	cmp r0, #0
-	beq _02302170
-	mov r1, r5
-	add r0, r4, #0x9c
-	bl EnableIqSkill
-_02302170:
-	add r6, r6, #1
-_02302174:
-	cmp r6, #0x19
-	blt _02302124
-_0230217C:
-	mov r0, #3
-	bl GetPerformanceFlagWithChecks
-	cmp r0, #0
-	beq _023021A4
-	add r0, r4, #0x90
-	mov r1, #0x18
-	bl EnableIqSkill
-	add r0, r4, #0x9c
-	mov r1, #0x18
-	bl EnableIqSkill
-_023021A4:
-	add r0, r4, #0x90
-	mov r1, #0x38
-	bl IqSkillFlagTest
-	cmp r0, #0
-	beq _023021C4
-	add r0, r4, #0x9c
-	mov r1, #0x38
-	bl EnableIqSkill
-_023021C4:
-	add r0, r4, #0x90
-	mov r1, #0x39
-	bl IqSkillFlagTest
-	cmp r0, #0
-	ldmeqia sp!, {r4, r5, r6, pc}
-	add r0, r4, #0x9c
-	mov r1, #0x39
-	bl EnableIqSkill
-	ldmia sp!, {r4, r5, r6, pc}
-	.align 2, 0
-_023021E8: .word MIN_IQ_EXCLUSIVE_MOVE_USER
-_023021EC: .word MIN_IQ_ITEM_MASTER
-	arm_func_end UpdateIqSkills
-
-	arm_func_start ov29_023021F0
-ov29_023021F0: ; 0x023021F0
-	ldr ip, _023021FC ; =UpdateIqSkills
-	ldr r0, [r0, #0xb4]
-	bx ip
-	.align 2, 0
-_023021FC: .word UpdateIqSkills
-	arm_func_end ov29_023021F0
diff --git a/asm/overlay_29_023021F0.s b/asm/overlay_29_023021F0.s
new file mode 100644
index 00000000..a40cfb72
--- /dev/null
+++ b/asm/overlay_29_023021F0.s
@@ -0,0 +1,13 @@
+	.include "asm/macros.inc"
+	.include "overlay_29_023021F0.inc"
+
+	.text
+
+	arm_func_start ov29_023021F0
+ov29_023021F0: ; 0x023021F0
+	ldr ip, _023021FC ; =UpdateIqSkills
+	ldr r0, [r0, #0xb4]
+	bx ip
+	.align 2, 0
+_023021FC: .word UpdateIqSkills
+	arm_func_end ov29_023021F0
diff --git a/include/dungeon_pokemon_attributes_1.h b/include/dungeon_pokemon_attributes_1.h
index 1ea9965f..5d3308e1 100644
--- a/include/dungeon_pokemon_attributes_1.h
+++ b/include/dungeon_pokemon_attributes_1.h
@@ -12,5 +12,10 @@ bool8 IsTacticSet(struct entity *entity, enum tactic_id tactic_id);
 bool8 HasDropeyeStatus(struct entity* entity);
 // Checks if a monster has a certain IQ skill enabled.
 bool8 IqSkillIsEnabled(struct entity *entity, enum iq_skill_id iq_skill);
+// Updates the IQ skill flags of a monster.
+// If the monster is a team member, copies monster::iq_skill_menu_flags to monster::iq_skill_flags. If the monster is an enemy, enables all the IQ skills it can learn (except a few that are only enabled in enemies that have a certain amount of IQ).
+// If the monster is an enemy, it also sets its tactic to TACTIC_GO_AFTER_FOES.
+// Called after exiting the IQ skills menu or after an enemy spawns.
+void UpdateIqSkills(struct monster *monster);
 
 #endif //PMDSKY_DUNGEON_POKEMON_ATTRIBUTES_1_H
diff --git a/include/enums.h b/include/enums.h
index 8fba2114..88d60292 100644
--- a/include/enums.h
+++ b/include/enums.h
@@ -2,6 +2,7 @@
 #define PMDSKY_ENUMS_H
 
 #define NUM_TACTICS TACTIC_NONE + 1
+#define MAX_NUM_IQ_SKILLS 25
 
 // Tactic ID. These are usually encoded as bitvectors.
 enum tactic_id {
@@ -2909,6 +2910,7 @@ enum iq_skill_id {
     IQ_PIERCE_HURLER = 66,
     IQ_COLLECTOR = 67,
     IQ_TRUE_POWERIST = 68,
+    IQ_NONE_2 = 255,
 };
 
 enum movement_flag
@@ -3456,4 +3458,10 @@ enum script_calc_operation {
     CALC_RANDOM = 11,
 };
 
+// https://docs.google.com/spreadsheets/d/1NK3wkC8mOCu-tVkxULLkhpgPR-glApiD2v3zp-mdW7w
+enum performance_progress_flag
+{
+    PERFORMANCE_PROGRESS_FLAG_RANDOM_MISSION = 3
+};
+
 #endif //PMDSKY_ENUMS_H
diff --git a/include/pokemon.h b/include/pokemon.h
index c4645583..b4a391eb 100644
--- a/include/pokemon.h
+++ b/include/pokemon.h
@@ -3,6 +3,6 @@
 
 #include "dungeon_mode.h"
 
-bool8 IqSkillFlagTest(struct iq_skill_flags *iq_skill_flags, u32 iq_id);
+bool8 IqSkillFlagTest(u32 *iq_skill_flags, u32 iq_id);
 
 #endif //PMDSKY_POKEMON_H
diff --git a/main.lsf b/main.lsf
index c83bfbc5..a088da30 100644
--- a/main.lsf
+++ b/main.lsf
@@ -493,7 +493,7 @@ Overlay OVY_29
 	Object src/dungeon_logic_3.o
 	Object asm/overlay_29_02301E88.o
 	Object src/dungeon_pokemon_attributes_1.o
-	Object asm/overlay_29_02301FBC.o
+	Object asm/overlay_29_023021F0.o
 	Object src/dungeon_logic_5.o
 	Object asm/overlay_29_0230231C.o
 	Object src/dungeon_logic_2.o
diff --git a/src/dungeon_pokemon_attributes_1.c b/src/dungeon_pokemon_attributes_1.c
index dfd84202..9107d648 100644
--- a/src/dungeon_pokemon_attributes_1.c
+++ b/src/dungeon_pokemon_attributes_1.c
@@ -1,9 +1,19 @@
 #include "dungeon_pokemon_attributes_1.h"
+#include "dungeon_logic_7.h"
 #include "dungeon_util_static.h"
 #include "overlay_29_022FF898.h"
 #include "overlay_29_023000E4.h"
 #include "pokemon.h"
 
+extern bool8 CanLearnIqSkill(s32 iq_amount, enum iq_skill_id iq_id);
+extern void DisableIqSkill(u32 *iq_skills_flags, enum iq_skill_id iq_id);
+extern void EnableIqSkill(u32 *iq_skills_flags, enum iq_skill_id iq_id);
+extern bool8 GetPerformanceFlagWithChecks(s32 flag_id);
+extern enum iq_skill_id GetSpeciesIqSkill(s16 monster_id, u8 index);
+
+extern s16 MIN_IQ_EXCLUSIVE_MOVE_USER;
+extern s16 MIN_IQ_ITEM_MASTER;
+
 bool8 CanSeeInvisibleMonsters(struct entity *entity)
 {
     if (GetEntInfo(entity)->blinker_class_status.blinded == STATUS_BLINKER_EYEDROPS)
@@ -38,5 +48,72 @@ bool8 IqSkillIsEnabled(struct entity *entity, enum iq_skill_id iq_skill)
     if (!entity_info->is_not_team_member && DUNGEON_PTR[0]->iq_disabled)
         return FALSE;
 
-    return IqSkillFlagTest(&entity_info->iq_skill_flags, iq_skill);
+    return IqSkillFlagTest(entity_info->iq_skill_flags.flags, iq_skill);
+}
+
+void UpdateIqSkills(struct monster *monster)
+{
+    if (monster->is_not_team_member)
+    {
+        monster->iq_skill_flags.flags[0] = 0;
+        monster->iq_skill_flags.flags[1] = 0;
+        monster->iq_skill_flags.flags[2] = 0;
+
+        for (s32 i = 0; i < MAX_NUM_IQ_SKILLS; i++)
+        {
+            enum iq_skill_id iq_skill = GetSpeciesIqSkill(monster->id, i);
+            if (iq_skill == IQ_NONE_2)
+                break;
+
+            if (CanLearnIqSkill(monster->iq, iq_skill))
+            {
+                EnableIqSkill(monster->iq_skill_menu_flags.flags, iq_skill);
+                EnableIqSkill(monster->iq_skill_flags.flags, iq_skill);
+            }
+        }
+
+        if (monster->iq < MIN_IQ_EXCLUSIVE_MOVE_USER && IqSkillFlagTest(monster->iq_skill_flags.flags, IQ_EXCLUSIVE_MOVE_USER))
+            DisableIqSkill(monster->iq_skill_flags.flags, IQ_EXCLUSIVE_MOVE_USER);
+
+        if ((IsMonsterLoneOutlaw(monster) || monster->iq < MIN_IQ_ITEM_MASTER) && IqSkillFlagTest(monster->iq_skill_flags.flags, IQ_ITEM_MASTER))
+            DisableIqSkill(monster->iq_skill_flags.flags, IQ_ITEM_MASTER);
+
+        if (IqSkillFlagTest(monster->iq_skill_flags.flags, IQ_DEDICATED_TRAVELER))
+            DisableIqSkill(monster->iq_skill_flags.flags, IQ_DEDICATED_TRAVELER);
+
+        if (IqSkillFlagTest(monster->iq_skill_flags.flags, IQ_LAVA_EVADER))
+            DisableIqSkill(monster->iq_skill_flags.flags, IQ_LAVA_EVADER);
+
+        if (IqSkillFlagTest(monster->iq_skill_flags.flags, IQ_WEAK_TYPE_PICKER))
+            DisableIqSkill(monster->iq_skill_flags.flags, IQ_WEAK_TYPE_PICKER);
+
+        monster->tactic = TACTIC_GO_AFTER_FOES;
+    }
+    else
+    {
+        monster->iq_skill_flags.flags[0] = 0;
+        monster->iq_skill_flags.flags[1] = 0;
+        monster->iq_skill_flags.flags[2] = 0;
+        for (s32 i = 0; i < MAX_NUM_IQ_SKILLS; i++)
+        {
+            enum iq_skill_id iq_skill = GetSpeciesIqSkill(monster->id, i);
+            if (iq_skill == IQ_NONE_2)
+                break;
+
+            if (CanLearnIqSkill(monster->iq, iq_skill) && IqSkillFlagTest(monster->iq_skill_menu_flags.flags, iq_skill))
+                EnableIqSkill(monster->iq_skill_flags.flags, iq_skill);
+        }
+
+        if (GetPerformanceFlagWithChecks(PERFORMANCE_PROGRESS_FLAG_RANDOM_MISSION))
+        {
+            EnableIqSkill(monster->iq_skill_menu_flags.flags, IQ_ESCAPIST);
+            EnableIqSkill(monster->iq_skill_flags.flags, IQ_ESCAPIST);
+        }
+
+        if (IqSkillFlagTest(monster->iq_skill_menu_flags.flags, IQ_BRICK_TOUGH))
+            EnableIqSkill(monster->iq_skill_flags.flags, IQ_BRICK_TOUGH);
+
+        if (IqSkillFlagTest(monster->iq_skill_menu_flags.flags, IQ_MULTITALENT))
+            EnableIqSkill(monster->iq_skill_flags.flags, IQ_MULTITALENT);
+    }
 }
diff --git a/src/pokemon.c b/src/pokemon.c
index 9dc61f43..2580ec01 100644
--- a/src/pokemon.c
+++ b/src/pokemon.c
@@ -1,9 +1,9 @@
 #include "pokemon.h"
 
-bool8 IqSkillFlagTest(struct iq_skill_flags *iq_skill_flags, u32 iq_id)
+bool8 IqSkillFlagTest(u32 *iq_skill_flags, u32 iq_id)
 {
     u32 flags_index = iq_id >> 5;
-    u32 flags_section = iq_skill_flags->flags[flags_index];
+    u32 flags_section = iq_skill_flags[flags_index];
     u32 flag_bit_index = iq_id - (flags_index << 5);
     return (flags_section & (1 << flag_bit_index)) != 0;
 }