To bring some of the Emacs keybindings into your IDE,
Settings / Preferences | Keymap and enable the Emacs keymap.
If you are used to M-x, consider remapping the
Find Action binding to this shortcut in the
For more Emacs extensions, try the Emacs+Patched plugin.
To get Vim emulation in the IDE, use the IdeaVim plugin. It adds motion keys, marks, registers, and visual mode commands.