Here is the full list of all 55 Gaming Cafe Life achievements.
Buy items x 70
Buy items x 280
Buy items x 1120
Accept billings x 50
Accept billings x 200
Accept billings x 800
Serve food/drinks x 50
Serve food/drinks x 200
Serve food/drinks x 800
Kick out annoying customers x 15
Kick out annoying customers x 60
Kick out annoying customers x 240
Kick out thiefs x 10
Kick out thiefs x 40
Kick out thiefs x 160
Kick out ghosts x 10
Kick out ghosts x 40
Kick out ghosts x 160
Fill up tanks x 2
Fill up tanks x 8
Fill up tanks x 32
Defeat thugs x 15
Defeat thugs x 60
Defeat thugs x 240
Harvest plants x 20
Harvest plants x 80
Harvest plants x 320
Defuse bombs x 10
Defuse bombs x 40
Defuse bombs x 160
Clean stains x 60
Clean stains x 240
Clean stains x 960
Won card games x 10
Won card games x 40
Won card games x 160
Train in the gym x 5
Train in the gym x 20
Train in the gym x 80
Max out relationships with town citizens x 1
Max out relationships with town citizens x 3
Max out relationships with town citizens x 5
Reached the First Star Rating
Reached the Second Star Rating
Reached the Third Star Rating
Reached the Forth Star Rating
Reached the Fifth Star Rating
Reached the Sixth Star Rating
Reached the Seventh Star Rating
Reached the Eight Star Rating
Reached the Ninth Star Rating
Reached the Tenth Star Rating
Unlock all areas in the gaming cafe
Upgrade all tools to the maximum level
Unlock all staff to help the gaming cafe