A one shot dungeon crawl I ran tonight (I don't know why everything is underlined)

Monster-Haunted Castle Ruins

On the hill there are the ruins of an ancient castle, destroyed in a battle long ago. The castle used to belong to a wizard, and beneath this castle is all manner of tunnels, rooms, and traps, full of monsters and treasure. 

Other Information:

There is a magical sword called “Ghoulblade” in the tunnels beneath the castle. It is a 1 handed melee weapon dealing 1d6 damage, and anyone hit by it must make a body saving throw or be paralyzed for 1d6 rounds.

A child, a 5 year old boy named Chris, has gone missing, and is believed to be somewhere beneath the castle. His family offers a 200 coin reward for anyone who can find him.

Room	Monsters	Treasure	Other
1	3 giant centipedes	none	chains on floor
2	11 giant rats	none	pipes sticking out of wall
3	6 orcs	250 coins	rusted suits of armor
4	none	none	statue of a wizard
5	none	none	helmets on a table
6	6 skeletons	ghoulblade	1 skeleton is using ghoulblade
7	none	none	fire nozzle, body save or 2d6 damage
8	3 skeletons	300 coins	rotten fruit on floor
9	6 orcs	none	orcish runes on wall
10	5 orcs	500 coins	smashed grandfather clock
11	7 goblins	1000 coins	mirror covered in graffiti
12	none	none	pillars hold up ceiling
13	none	1000 coins	glowing mushrooms on floor
14	none	none	coats on hooks on wall
15	3 orcs	250 coins	stalagmites
16	8 giant rats	700 coins	graffiti saying “bob was here”
17	none	none	floor covered in soot
18	none	50 coins	graffiti saying “I like gold”
19	none	none	Chris is hiding here among some crates
20	none	none	some broken chairs
21	none	100 coins	wardrobe full of old clothes
22	none	none	dried blood on wall
23	6 orcs	none	human bones
24	9 goblins	none	pillars hold up ceiling
25	none	300 coins	parts of ceiling have collapsed

Goblin (small green humanoid fairies with sharp teeth and knives)

HD 1/2

AC 9

ATK 1 dagger

DMG 1d6-1

ML 7

XP 10

Giant Rat (big mangy rats with red eyes)

HD 1/2

AC 8

ATK 1 bite

DMG 1d3

ML 6

XP 10

Giant Centipede (centipede the size of a human arm)

HD 1/2

AC 6

ATK 1 bite

DMG 1d6-1 + body saving throw or take 2d6 damage

ML 7

XP 25

Skeleton (animated human skeleton)

HD 1

AC 6 (5 when attacked with edged weapons)

ATK 1 short sword

DMG 1d6

ML 12

XP 25

Orc (greenish gray pig-faced humanoids who like to kill)

HD 1

AC 7

ATK 1 axe

DMG 1d6+1

ML 9

XP 25