Although this game has been appraised by many, I felt the game was lackng in several aspects. Keep in mind I have just recently began playing this and my opion may change. So far however, I haven't been able to pass the first quest.
First of all, there is not enough explanation on the talents, spells, and so on in the sense that it does not explain what it does or even how to use it (cast on friendly or foe?). You are supposed to learn as you go, or trial and error... whichever works for you.
Oh and this goes for character development as well. Sure, there is a short tutorial when you first open the character screen, but the details of what each stat means and how it affects the game is not explained fully. I believe you are expected to have some knowledge of RPG's prior to playing this game.
Secondly, your character starts of very weak and although the levels of the enemies match that of your own, the levels of the quest related enemy NPC's are at a level to cause difficulty for any player.
Thirdly, the squad/party system is a little difficult to master. It is not intuitive and you have to either select the entire party to move everyone together or select a specifc member to place him/her in a particular position. Oh and then if you try to cast a spell, you will find yourself charging the enemy automatically post casting the spell...
Fourthly, the camera... I found it odd, unnatural. Also the controls kinda reminded me of the original Gothics (1 and 2). Not a negative, just my thought on the matter.
Fifthly, Frequency of saves... the game autosaves but do not rely on it... you really have to save often because once you (or if you have a party, your party members are all dying), the game is over. Now, if you could quickly cast a heal spell that would have been awesome but to cast a healing spell (perhaps just in the beginning) you do all these weird dancing moves (which get interrupted by an attack) that takes ages and ages (you gotta move those curves, yo!) and before you know it, your entire party is dead. Oh, la la! Thn you see a screen with two options, load save game or end game... Load save game. of cuorse... what the?! This is when I entered the area for the first time.... like an hour ago! SAVE! Very Very Very important in this unforgiving game.
For those of you that like to use the console commands to quicken the game, enhance their gameplay, run a one man show, or whatever you call it; you will be disappointed because there is no such thing in this game... so, you are gonna have to sweat it if you want to finish the game... and by the looks of it, you'd better get a towel ready because there is going to be a lot of sweating to be had!
Update 31st of July, 2014
Ok so here are some other things I learned: right clicking on items provides an explanation of the item along with properties (if any), such as armor it provides (and where), damage and so on.
You only get a limited number of saves and only 1 quick save slot... Use them wisely!