Here is the full list of all 14 Ghost Janitors achievements.
Welcome to Ghost Janitors! Get your job done and don't ask questions!
You played on Crimsonwood House for the first time!
You played on Ravenwood Manor for the first time!
You played on City Lights Villa for the first time!
You just died for the first time in a mission. Be careful next time!
Congratulations, you just fully finished your first mission!
You are getting good at this! You fully finished 10 missions. Well done!
Just like a pro! You fully finished 100 missions. You are an expert now!
Well... Atleast you are good at something...
Ok, ok, there you go. You are the best at dying, just take your prize.
You just cleaned your first 25 trash. Keep it going!
Well done! You just collected 100 trash. Sky is the limit!
Wow! You just collected 1000 trash. Looks like you are the Cleaning Master!
You somehow managed to break the light inside the lobby...