PD2Hook.yml in your Payday2 Steamapps folder

Config:
   OutputMode: 3
   OutputFile: PD2Hook.log
   PrintOffsets: false
   ExtraCols: 10
   ExtraRows: 10
KeyBindings:
   - [VK_F5, something.lua]


--something.lua in your Payday2 Steamapps folder

-- +$1,000,000 (yes it says 10,000,000 no I don't know why)
managers.money:_add_to_total(10000000)

Once you do that, launching the game should launch a LUA window, then you should be able to press F5 at the title screen and then click Inventory to see that you got +$1m. You can probably find more commands by googling around those sketchy sites.

managers.experience:_set_current_level(1234)
managers.skilltree:_set_points(1234)
or whatever