Unfortunately this game has really serious balance problems.
Firsltly you can end game in 3-4 runs, which makes the game really short.
Secondly first half of the game were passed simply with mana regen and health regenen enchantments without using potion or even new weapon/armour - I just wiped out floor after floor thoughtlessly. Enemies could not harm me. At some point I acquired summarly 20% dodge and 10% instakill chance. I think it's too powerful - it makes useless other weapons and armours.
The "hard" part was levels 71-80, but at that point I had too much potion, so killing every enemy on each floor was also not a problem.
About skill tree and elements system: 1) magic useless, apart from heal; 2) elements system... I didn't notice it. Just drinked all potion for elements resist.
So for me the game was a big dissapointement, even thouh I've waited for sequel to first enchaned cave. 3/5
***SPOILER***
And where were the ultimate demon?((