Here is the full list of all 60 Monster Bash HD achievements.
...
Complete all achievements
Save 4 pets with 1 one shot
Create and post user level
Beat Count Chuck...fast
Complete Episode 3
Complete all episodes
Destroy all Skull Watchers in the game
Break all treasure chests in the game
Collect all bonus pickups in the game
Finish the entire game with 100% on every level
Beat all par times in the game
Kill 25 Pumpkin Heads
Kill 50 Witches
Collect all the Johnnies in the game
Defeat Nemessis in all 3 episodes.
Kill 50 Spiders
Find all the secrets
Read every page of the instructions book in the menu
Kill Igor without killing any of his flies
Complete Episode 2
Get petrified 5 times
Extinguish the candle with fireball
Kill 50 eyeballs
Finish any non-boss level in 1 minute or less
Ride 50 brooms
Kill enemy with pushable object
Get 100 Check points
Finish any episode on Hard difficulty
Finish any episode on Nightmare difficulty
Die 50 Times
Shoot 10000 rocks from slingshot
Beat Cyclope without getting thrown in the air
Complete Episode 1
Collect 250 peppermints
Kill 50 enemies with the Rocket
Solve a puzzle requiring the use of blocks
Finish E1L06 without getting hurt
Finish an entire level without taking any damage
Kill 50 Thing Hands
Collect 1000 candies
Kill 100 Zombies
Collect 500 Candy Kisses
Save 100 pets
Break 100 objects
Destroy 50 treasure chests
Water a plant
Get 8x splatter bonus on Skull Watcher.
Race Frank Lloyd Rat to the other side of E1L01 and win.
Complete E1L02 without disturbing the hanged skeletons
Beat par time on any level.
Get all bonuses on any level
Crawl over 100 tiles
Score splatter bonus on 50 skulls
Get 5 heart pickups while having full health.
Smash 10 zombie heads before they hit the ground.