diff --git a/res/bg/1.png b/res/bg/1.png
index 9962865..612d0f2 100644
Binary files a/res/bg/1.png and b/res/bg/1.png differ
diff --git a/res/bg/1l.png b/res/bg/1l.png
new file mode 100644
index 0000000..9ceeb69
Binary files /dev/null and b/res/bg/1l.png differ
diff --git a/res/bg/1r.png b/res/bg/1r.png
new file mode 100644
index 0000000..bbf2ca9
Binary files /dev/null and b/res/bg/1r.png differ
diff --git a/res/font.png b/res/font.png
index 79822df..09e618d 100644
Binary files a/res/font.png and b/res/font.png differ
diff --git a/res/resources.res b/res/resources.res
index f46d91e..aa1c19c 100644
--- a/res/resources.res
+++ b/res/resources.res
@@ -15,6 +15,8 @@ IMAGE bossBar "chrome/boss.png" FAST
 // background
 
 IMAGE bg1 "bg/1.png" FAST
+IMAGE bg1L "bg/1l.png" FAST
+IMAGE bg1R "bg/1r.png" FAST
 
 
 // player and enemies
diff --git a/src/background.h b/src/background.h
index cc871db..8ee0247 100644
--- a/src/background.h
+++ b/src/background.h
@@ -8,11 +8,22 @@
 
 // draw
 
+s16 bgI;
+Image* bgImage;
 
 static void drawBg(){
 	for(u16 x = 0; x < BG_W; x++) for(u16 y = 0; y < BG_H; y++){
 		if(x % 8 == 0 && y % 8 == 0){
-			VDP_drawImageEx(BG_B, &bg1, TILE_ATTR_FULL(PAL1, 0, 0, 0, BG_I + 1), x - 4, y, 0, DMA);
+			bgI = BG_I;
+			bgImage = &bg1;
+			if(x == 8){
+				bgI += 64;
+				bgImage = &bg1L;
+			} else if(x == 24){
+				bgI += 128;
+				bgImage = &bg1R;
+			}
+			if(x != 16) VDP_drawImageEx(BG_B, bgImage, TILE_ATTR_FULL(PAL1, 0, 0, 0, bgI), x - 4, y, 0, DMA);
 		}
 	}
 }
@@ -26,15 +37,26 @@ static void drawBg(){
 #define BG_SIZE 64
 #define BG_LIMIT FIX16(-256)
 
+#define BG_MOD FIX16(0.25)
+
 s16 bgPos;
 fix16 bgPosF;
+fix16 bgSpeed = BG_SPEED;
 
 static void scrollBg(){
-	bgPosF = fix16Sub(bgPosF, BG_SPEED);
-	if(bgPosF <= BG_LIMIT) bgPosF = fix16Sub(bgPosF, BG_LIMIT);
-	bgPos = fix16ToInt(bgPosF);
+	if(bossHealth > 0){
+		if(bgSpeed > 0) if(clock % 10 == 0) bgSpeed = fix16Sub(bgSpeed, BG_MOD);
+	} else {
+		if(bgSpeed < BG_SPEED) if(clock % 10 == 0) bgSpeed = fix16Add(bgSpeed, BG_MOD);
+	}
+	if(bgSpeed > 0){
+		bgPosF = fix16Sub(bgPosF, bgSpeed);
+		if(bgPosF <= BG_LIMIT) bgPosF = fix16Sub(bgPosF, BG_LIMIT);
+		bgPos = fix16ToInt(bgPosF);
+	}
 }
 
+
 // loop
 
 void loadBg(){
diff --git a/src/chrome.h b/src/chrome.h
index 8327faa..d6c96e3 100644
--- a/src/chrome.h
+++ b/src/chrome.h
@@ -81,6 +81,16 @@ static void loadBombs(){
 }
 
 
+// speed
+
+#define SPEED_X 24
+#define SPEED_Y 1
+
+static void loadSpeed(){
+	VDP_drawText("+++", SPEED_X, SPEED_Y);
+}
+
+
 // loop
 
 void loadChrome(){
@@ -89,6 +99,7 @@ void loadChrome(){
 	loadTime();
 	loadLives();
 	loadBombs();
+	loadSpeed();
 }
 
 void updateChrome(){
diff --git a/src/enemies.h b/src/enemies.h
index 4ab8aa6..a97b687 100644
--- a/src/enemies.h
+++ b/src/enemies.h
@@ -89,7 +89,10 @@ static void updateEnemy(s16 i){
 		enemies[i].dead = TRUE;
 		enemies[i].suicide(i);
 	} else {
-		if(!enemies[i].seen && enemies[i].pos.y >= fix16Sub(0, enemies[i].off.y)){
+		if(!enemies[i].seen &&
+			enemies[i].pos.y >= fix16Sub(0, enemies[i].off.y) &&
+			enemies[i].pos.x >= fix16Sub(0, enemies[i].off.x) &&
+			enemies[i].pos.x <= fix16Add(FIX16(GAME_W), enemies[i].off.x)){
 			enemies[i].seen = TRUE;
 			SPR_setVisibility(enemies[i].image, VISIBLE);
 		}
diff --git a/src/stage.h b/src/stage.h
index ac8d0f4..abe875a 100644
--- a/src/stage.h
+++ b/src/stage.h
@@ -1,33 +1,5 @@
 // stage
 
-/*
-
-sine from left
-sine from right
-big middle
-sine from left, big right
-sine from right, big left
-big middle
-swarm
-big from left and right
-swarm, big right
-swarm, big left
-
-midboss
-
-big from left and right
-big from right and left
-big from left, small formation
-big from right, small formation
-big from left, small formation
-big from right, small formation
-
-midboss
-
-final boss at 30 seconds left
-
-*/
-
 
 s16 stageClock,
 	nextClock;
@@ -290,15 +262,71 @@ static void waveBig5(bool right){
 			}
 			enemies[i].ints[0] += 56;
 		}
-		if(enemies[i].clock == 120 || enemies[i].clock == 180){
-			enemies[i].speed = fix16Sub(enemies[i].speed, FIX16(0.1));
-			enemies[i].angle += enemies[i].bools[0] ? -64 : 64;
+		if(enemies[i].clock == 120){
+			enemies[i].speed = FIX16(0.5);
 			updateEnemyVel(i);
 		}
 	}
 	spawnEnemy(spawner, updater, EMPTY);
 }
 
+static void waveBig6(bool right){
+	struct enemySpawner spawner = {
+		.angle = right ? 512 : 0,
+		.speed = FIX16(1),
+		.x = right ? (GAME_W + 16) : -32,
+		.y = 40,
+		.image = right ? &fairyGreen : &fairyYellow,
+		.offX = 16,
+		.offY = 16,
+		.health = 4
+	};
+	spawner.bools[0] = right;
+	void updater(s16 i){
+		if(enemies[i].clock % 10 == 0 && enemies[i].clock >= 60 && enemies[i].clock < 180){
+			enemies[i].angle += enemies[i].bools[0] ? -24 : 24;
+			updateEnemyVel(i);
+		}
+		if(enemies[i].clock % 35 == 0 && enemies[i].clock > 0 && enemies[i].clock < 180){
+			struct bulletSpawner spawner = {
+				.x = enemies[i].pos.x,
+				.y = enemies[i].pos.y
+			};
+			for(u8 j = 0; j < 4; j++){
+				spawner.angle = random() % 256;
+				if(enemies[i].bools[0]) spawner.angle += 256;
+				if(j < 2){
+					spawner.speed = FIX16(1.25);
+					spawner.big = TRUE;
+					spawner.image = &bigBullet;
+				} else {
+					spawner.speed = FIX16(1.75);
+					spawner.light = TRUE;
+					spawner.image = &smallBullet;
+				}
+				spawnBullet(spawner, EMPTY);
+			}
+		}
+
+	}
+	spawnEnemy(spawner, updater, EMPTY);
+}
+
+
+static void waveFormation(bool right){
+	struct enemySpawner spawner = {
+		.angle = 256,
+		.speed = FIX16(0.75),
+		.x = 80,
+		.y = -16,
+		.image = &fairyRed,
+		.offX = 16,
+		.offY = 16,
+		.health = 6
+	};
+	// spawnEnemy(spawner)
+}
+
 
 // bosses
 
@@ -387,7 +415,7 @@ static void waveMidboss1(){
 		.offX = 24,
 		.offY = 28,
 		.boss = TRUE,
-		.health = 50
+		.health = 40
 	};
 	bossMax = spawner.health;
 	void updater(s16 i){
@@ -395,7 +423,7 @@ static void waveMidboss1(){
 		if(enemies[i].bools[0]){
 			bossHealth = enemies[i].health;
 			bossMove(i);
-			if(enemies[i].health >= 25){
+			if(enemies[i].health >= 20){
 				// ring
 				if(enemies[i].clock % 90 == 0){
 					struct bulletSpawner spawner = {
@@ -494,7 +522,7 @@ static void waveMidboss1(){
 
 // loop
 
-s16 currentWave = 0;
+s16 currentWave = 13;
 
 void updateStage(){
 	if(enemyCount == 0){
@@ -539,12 +567,12 @@ void updateStage(){
 				waveSwarm(2);
 				waveBig4(TRUE, TRUE);
 				break;
-			case 9:
 			// swarm (2), big left
+			case 9:
 				waveSwarm(2);
 				waveBig4(FALSE, TRUE);
 				break;
-			 // midboss
+			// midboss
 			case 10:
 				waveMidboss1();
 				break;
@@ -553,6 +581,16 @@ void updateStage(){
 				waveBig5(FALSE);
 				waveBig5(TRUE);
 				break;
+			// big from right and left
+			case 12:
+				waveBig6(TRUE);
+				waveBig6(FALSE);
+				break;
+			// big from left, small formation
+			case 13:
+				waveBig6(FALSE);
+				waveFormation(TRUE);
+				break;
 
 		}
 		currentWave++;
@@ -560,4 +598,33 @@ void updateStage(){
 
 	stageClock++;
 	if(stageClock >= CLOCK_LIMIT) stageClock -= CLOCK_LIMIT;
-}
\ No newline at end of file
+}
+
+
+/*
+
+sine from left
+sine from right
+big middle
+sine from left, big right
+sine from right, big left
+big middle
+swarm
+big from left and right
+swarm, big right
+swarm, big left
+
+midboss
+
+big from left and right
+big from right and left
+big from left, small formation
+big from right, small formation
+big from left, small formation
+big from right, small formation
+
+midboss
+
+final boss at 30 seconds left
+
+*/
\ No newline at end of file