Here is the full list of all 12 Rats - there are Time is running out! achievements.
Find all the blueprints
Earn 150 stars
Reach the maximum speed
kick 5 guards away
Kick a pig away
Trigger the fire boot for the first time
Eat 25 cheeses
Steal 1000 coins
Fight 25 guards
Find a total of 5 minutes
Spend 300 second
Unlock 5 doors