There are a few presets available you could switch between. Below are the default keys to the advocated preset on PC. If you want to access this menu yourself, head to the settings.
Other Enter the Gungeon Guides:

Enter The Gungeon Controls, Key Bindings & Settings

Here is a list of controls, used on PC under the recommended preset.
- Control: Button/ALT Button
- Shoot: Left Click
- Dodge: Right Click
- Interact: E
- Reload: R
- Move Up: W
- Move Down: S
- Move Left: A
- Move Right: D
- Use Item: Space
- Use Blank: Q
- Map: TAB
- Next Weapon: Scroll Wheel Up
- Previous Weapon: Scroll wheel Down
- Next Item: Left SHIFT
- Gun Menu: Left CTRL
- Drop Gun: Hold F
- Drop Item: Hold G
- Pause: ESC
- Inventory: I
There are a few more controls listed in the menu that don’t possess a key bind in any way. Meanwhile, you can change preset by switching through the top option.
If you want to enable the use of a controller, then select the’Controls’ option from the main menu and adjust the controller type for Player 1 or Player 2.

