It only got a 9 because it wasn't long enough, nor do you need all of your stat points to beat the "Boss" lol he was easy. I like how you have a level (or stat) cap, allows for much replay value, and I have replayed the heck outta this one! Really awesome and fun game though. I've probably played and made a dozen different builds, from double mana regen spec, to full dmg and crit spec, full ice dmg, full run speed spec (lol yeah some were a little silly) but I have found certain things more dominating than others.
Quick Overview: Divine is the best spec, Judgement is the best spell. Ice is a very weak tree and doesn't offer the control aspect as much as you would think. Fire is straitforward damage, a good complement to any spec. Smite/Triple Fireball spamming mixed with Judgements on packs of mobs makes you unstoppable.
FIRST - The game will become much easier if you obtain a second projectile. If you are having trouble I would do this immediately as every spell is on its own timer you can now spam 2 spells, so get Frostbolt or Smite asap (You may end up choosing one or both, but this will affect your spec later on).
SECOND - Judgement! By far the best and most useful spell in the game. Divine was by far the best tree to work in, and if you choose this as one of your two trees, definitely get Judgement. The stun and spell nullification are supreme, among the fairly high dmg (crits over 100). If you end up doing a Fire/Ice build and do do any Divine you should spec towards Frost Nova as snares are ultimately useful in this game.
Those 2 points alone should make the game very fun and beatable. If you don't want to go divine though, there are other options. Play around with the specs as you wish but I will state my opinion on the "don'ts".
FIRST - The full screen magic attacks (Armageddon and Blizzard) are kind of useless and ineffective AND a mana drain. If you choose to spec into using one of these spells often you should do a double mana regen spec, making it impossible to really use Armageddon as it's too far down a tree without mana regen. At +150% mana regen, you should be able to cast blizzard at will without many mana problems. Other spells to avoid are Ring of Fire and Spark of Life (You may spec to improve Spark of Life, but I recommend double mana build for this aswell).
You can tear through this game easy with the Crit/Spell Power Build.
3 2 1
0 4 3 2 *You may want to exchange 2 points
1 2 0 1 to improve judgement, as it is the
0 0 3 best spell in the game, at the cost of
1 3 0* 2 crit.
All in all AMAZING GAME!!!!!! :)