Okay. Let me walk you though it. Mind,
the game itself doesn't like to be transferred to SD(so you may want to leave it alone) and the data for it will remain on the internal memory (1.5 to 2 gigs, somewhere in there; don't shoot me, I don't remember exacts) but most of your apps can. Mind, I checked this on a Samsung Galaxy 4 and I actually have the game on my Kindle Fire, but I think they are in similar spots.
Go to Config (gear if you swipe down) ==> More ==>Application Manager. Go down the list one at a time, looking at one app at a time; each one will tell you if you can move it to SD card with a button; hit it to move the offending app. Be warned with KHUX though; At least on the Fire, if you move it to SD it'll eventually cause you to have to reinstall the game. I haven't had problems with any other apps. Not all apps will let you however, so keep that in mind.
To move pics/files,
this might help you. Mind, do not move any data files for your apps, or they will bug out major. (Learned that the hard way)
Oh and GET RID OF ES FILE EXPLORER. It's become a spyware/shady adware laden app, yuk.
I recommend Lifehacker's pick, Solid Explorer, instead.