Try the coffe shop level it's smaller and no one runs away also it has less money to get and for the split get all of the money from the level and every one gets out and is not a tratior do it for all rounds. Keep in mind some of the achievements are a lill' glitchy so, you may have to do them a few times. I'm sorry about the spelling by the way but, I think you get it.
also any advice for "Cash addict" in the same game? We've cleared out the jewelry robbery level like 30 times now. We get both jewelry stores + the safes in the back room, the coffee shop & the 2 ppl in the parking lot but it won't unlock.