The Shadow Raid heist map loot can be hard to find. Besides the vault you will find loot inside containers. Another important source are the crates. But to open crates you will need crowbars. Checkout this guide for the container and crowbar locations.
Once you have successfully completed the Shadow Raid Heist you can think about getting all six achievements. Checkout this list with tips and tricks.
Things are bit different in the Big Bank Heist DLC. There now is a very advanced preplanning system that allows your party to vote on different options. These different options cost favors. Checkout everything about preplanning and new mechanics here...
The Big Bank Heist Payday 2 DLC map has a total of 10 achievements. Some of them are really easy, others are really hard. GameplayInside is here for you!
What about the Entrapment Achievement in The Big Bank Heist DLC? Here is a Payday 2 guide to get the entrapment achievement the easy way!