The The Diamond Store Heist Title update for PAYDAY 2 has 9 achievements.
Complete the Diamond Store job on the Death Wish difficulty or above.
Complete the Diamond Store job on the Mayhem difficulty or above.
Complete the Diamond Store job on the Death Sentence difficulty with the One Down mechanic activated.
Complete the Diamond Store job on the Death Sentence difficulty.
Complete the Diamond Store job on the Hard difficulty or above.
Complete the Diamond Store job on the Very Hard difficulty or above.
Complete the Diamond Store job on the OVERKILL difficulty or above.
Complete the Diamond Store job on the Normal difficulty or above.
In the Diamond Store job, don't let any civilians escape, die or leave the Diamond store. Until all bags of loot from the diamond store are secured on the OVERKILL difficulty or above.