diff --git a/src/npc/ai/grasstown.rs b/src/npc/ai/grasstown.rs
index 22c3c23..5715a4e 100644
--- a/src/npc/ai/grasstown.rs
+++ b/src/npc/ai/grasstown.rs
@@ -533,7 +533,7 @@ impl NPC {
             }
             20 => {
                 self.vel_x /= 2;
-                self.vel_y += 0x10;
+                self.vel_y += 0x20;
 
                 if self.shock == 0 {
                     self.action_num = 10;
@@ -1275,6 +1275,7 @@ impl NPC {
                     self.anim_num = 1;
                     self.anim_counter = 0;
                     self.damage = 0;
+                    state.sound_manager.play_sfx(23);
 
                     let player = self.get_closest_player_mut(players);
                     if player.x > self.x + 0x12000
@@ -1309,6 +1310,8 @@ impl NPC {
 
                     self.npc_flags.set_shootable(false);
                     self.npc_flags.set_solid_soft(false);
+
+                    state.sound_manager.play_sfx(51);
                 }
 
                 if self.flags.hit_bottom_wall() {
diff --git a/src/npc/ai/last_cave.rs b/src/npc/ai/last_cave.rs
index 9c6c6f0..0821fb8 100644
--- a/src/npc/ai/last_cave.rs
+++ b/src/npc/ai/last_cave.rs
@@ -28,15 +28,11 @@ impl NPC {
                     self.direction = Direction::Right;
                 }
 
-                if self.target_x < 100 {
-                    self.target_x += 1;
-                }
-
                 if self.action_counter >= 8
                     && self.x - 0x12000 < player.x
                     && self.x + 0x12000 > player.x
-                    && self.y - 0xc000 < player.y
-                    && self.y + 0xc000 > player.y
+                    && self.y - 0xa000 < player.y
+                    && self.y + 0xa000 > player.y
                 {
                     self.anim_num = 1;
                 } else {
@@ -55,11 +51,10 @@ impl NPC {
                 }
 
                 if self.action_counter >= 8
-                    && self.target_x >= 100
                     && self.x - 0xc000 < player.x
                     && self.x + 0xc000 > player.x
                     && self.y - 0xa000 < player.y
-                    && self.y + 0xa000 > player.y
+                    && self.y + 0xc000 > player.y
                 {
                     self.action_num = 2;
                     self.action_counter = 0;
diff --git a/src/npc/ai/misc.rs b/src/npc/ai/misc.rs
index b023940..98212c5 100644
--- a/src/npc/ai/misc.rs
+++ b/src/npc/ai/misc.rs
@@ -436,8 +436,8 @@ impl NPC {
             return Ok(());
         }
 
-        self.anim_counter = (self.anim_counter + 1) % 4;
-        self.anim_num = self.anim_counter / 2;
+        self.anim_counter = (self.anim_counter + 1) % 6;
+        self.anim_num = self.anim_counter / 3;
         self.anim_rect = state.constants.npc.n032_life_capsule[self.anim_num as usize];
 
         Ok(())
diff --git a/src/npc/ai/plantation.rs b/src/npc/ai/plantation.rs
index d07f65d..cb7ab47 100644
--- a/src/npc/ai/plantation.rs
+++ b/src/npc/ai/plantation.rs
@@ -918,7 +918,7 @@ impl NPC {
         }
 
         self.action_counter += 1;
-        if self.action_counter % 5 != 0 {
+        if self.action_counter % 5 == 0 {
             state.sound_manager.play_sfx(110);
         }
 
@@ -975,7 +975,12 @@ impl NPC {
                     self.action_counter2 = 0;
 
                     self.vel_y = -0x600;
-                    self.vel_x = self.direction.vector_x() * 0x200;
+
+                    if self.target_x > self.x {
+                        self.vel_x = 0x200;
+                    } else {
+                        self.vel_x = -0x200;
+                    }
                 }
             }
             12 => {
diff --git a/src/npc/ai/sand_zone.rs b/src/npc/ai/sand_zone.rs
index 94a7445..faa0e83 100644
--- a/src/npc/ai/sand_zone.rs
+++ b/src/npc/ai/sand_zone.rs
@@ -485,7 +485,9 @@ impl NPC {
 
         match self.action_num {
             0 | 1 => {
-                if self.action_num == 0 {
+                let is_in_spawn_radius = (player.x - self.x).abs() < 0x28000 && (player.y - self.y).abs() < 0x28000;
+
+                if self.action_num == 0 && is_in_spawn_radius {
                     self.action_num = 1;
                     self.target_x = self.x;
                     self.target_y = self.y;
@@ -495,16 +497,16 @@ impl NPC {
                     npc.cond.set_alive(true);
                     npc.parent_id = self.id;
                     let _ = npc_list.spawn(0, npc);
-                }
+                } else if self.action_num == 1 || (self.action_num == 0 && is_in_spawn_radius) {
+                    self.direction = if player.x >= self.x { Direction::Right } else { Direction::Left };
+                    self.vel_y += (self.target_y - self.y).signum() * 0x0a;
+                    self.vel_y = clamp(self.vel_y, -0x200, 0x200);
 
-                self.direction = if player.x >= self.x { Direction::Right } else { Direction::Left };
-                self.vel_y += (self.target_y - self.y).signum() * 0x0a;
-                self.vel_y = clamp(self.vel_y, -0x200, 0x200);
-
-                if self.vel_y2 >= 10 {
-                    self.action_num = 2;
-                } else {
-                    self.vel_y2 += 1;
+                    if self.vel_y2 >= 10 {
+                        self.action_num = 2;
+                    } else {
+                        self.vel_y2 += 1;
+                    }
                 }
             }
             2 => {
@@ -1060,6 +1062,8 @@ impl NPC {
                     Direction::FacingPlayer => {}
                 }
 
+                self.action_counter += 1;
+
                 state.quake_counter = 20;
                 state.quake_rumble_counter = 20;
                 if self.action_counter % 8 == 0 {