Here is the full list of all 19 We Are Showtime! achievements.
Win the game in easy mode
Win the game in normal mode
Win the game in hard mode
Collect 25 buckets of Milk
Smash 90 cockroaches
Smash 50 moles on their head
Scan 25 items
Reach round 10 in endless mode
Reach round 25 in endless mode
Reach round 50 in endless mode
Finish one game within one second
Play party mode with friends
Play each game in one sitting
Hit the target with the first arrow
Knock over all cans with one throw
Shake 25 cans
Unlock all furniture