Unreal Engine 4 2d tutorials link and vid and some nice 2d development software

 LINK Tutorial playlist 


2d games tend to be easier to develop than 3d games, this is a useful series of video tutorials on the free unreal engine by Muhammad A.Moniem.

Two software that reduce character animation times follow:

Spine 2d


Spriter


For music one would use Fruity Loops or similar software or public domain works.
Sound effects there are some free, others can be recorded with a microphone, and others can be licensed for a fee.