The game gives you the option to choose between loud and stealth heists with various objectives.
There are Skills in the game, which allow you to create and combine setups across 5 different classes. There are many ways you can combine your setups and find out what fits you the most.
The weapons are greatly customizable, however I think getting the Ultimate Edition of the game is a must nowadays, since you can't buy the DLCs separately and you might lack many of the great weapons.
As I mentioned before, there are many heists to choose from, with different objectives, but again, having DLCs to get some new ones is a good choice.

The game gives you the option to choose between loud and stealth heists with various objectives. There are Skills in the game, which allow you to create and combine setups across 5 different classes. There are many ways you can combine your setups and find out what fits you the most. The weapons are greatly customizable, however I think getting the Ultimate Edition of the game is a must nowadays, since you can't buy the DLCs separately and you might lack many of the great weapons. As I mentioned before, there are many heists to choose from, with different objectives, but again, having DLCs to get some new ones is a good choice.