Hey,
So theres a bunch of methods of achieving some of this.
In game, if you press ’ (to the left of # on UK layout) you unlock the camera and go into debug mode. You can read all about it here:
https://docs.unrealengine.com/latest/INT/Gameplay/Tools/GameplayDebugger/
Another way to release the camera would be to play in simulate, or hit Shift+F1 to unlock the mouse and press eject on the toolbar.
Im not sure a way to step frames besides the blueprint break functionality, but you can achieve slow motion without blueprints via the console, hit the console key ( ` for me ) and type slomo X. where X is your speed. 1 being default.