Here is the full list of all 12 Piping Hot achievements.
Get gold on 5 levels
Get gold on 10 levels
Get gold on all of Building B
Get gold on all of Building C
Complete Building B
Complete Building C
Complete a level in 1 minute
Complete a level in 2 minutes
Complete Unlimited 3 floors in 1 minute
Complete Unlimited 3 floors in 2 minutes
Complete 10 Unlimited levels
Complete 50 Unlimited levels