Hidden things in game files

AI don't think those will be implemented by the developers because there are no updates, but a modder may implement them:
 * sfx_sneak.wav (rogue class?)
 * audiofile of ball-ligtning explosion, ball-lightning not penetrate (translations), the latter sounds electrical
 * sfx_transform.wav (new skill?, boss?)
 * audio file of some sort of beam (related to the ball-lightning?, another class?)
 * sfx_equipring and sfx_equiparmor .wav (self-explanatory)
 * sfx_xuanfengzhan.wav (twirling-wind-something, not the barbarian-skill, sounds like magical)
 * sfx_zuzhou.wav sounds scary and is clearly a boss related file (translates to malediction or ban)
 * unused images of armor/weapons/rings
 * image of an exp bottle item icon, which means they wanted to implement an item, that lets you increase your level
 * images of lightning in a shape, that looks like other images of a bubble on the ground, could be a spell
 * images of a ball lightning
 * images of stone rocks, like those brown or blue ones that fall from the sky in the boss levels with the brown or the blue boss (Boss 7 and 10), implies another boss of that kind or a minion, that is out of grey rock.
 * pictures of buttons saying easy, normal, elite and nightmare
 * picture saying "super hero encounterded [typo in the picture] Enemy Level: [space] If you can defeat him you'll gain a powerful ally!
 * new gamemap

collage of some images:



in the pic u have a hero, that looks a bit like a cartoon of a god-character (e.g. Zeus) also there are skills like "summonangle.png" beneath him.

a lot of high-elvish hero skins

the blue guy in the bottom right is probably a "ice-golem", due to the skill "summon ice golem", which I put beneath him (its the one with the triangular splash-shape)

I think I lost one Ice-elve picture on the way to the collage.

That makes: or I am completely off-track
 * A Legendary God (?)
 * Rogue-Elves (?)
 * Legendary Elementary Guy possibly transforming into an ice golem or a guy with a firehead? (??)
 * and I think the head at the top of the picture is a boss