You sir, are a monster.
Muahahah!
It's ok. I played ten hours straight last night.
orb boosting
If you still have that, don't refresh your browser. It was nerfed to do no damage because people were using the orb damage to pass levels. Was talking to someone earlier who managed 3.5 million on an early field just by maxing all his battle traits then gem bombing his orb with everything he had and putting the game on fast. By comparison, I've unlocked roughly half the map and the highest score I've managed is 100k.
I'm level 26 with a skill cap of 7 and I have 7 free skills and sadly one premium skill
I'm presently level 50 with 13 fields unlocked, 12 skills (plus 1 premium) and a skillcap of 10, 293 unspent skillpoints and 2051 starting mana.
Unfortunately, the game gets terribly difficult later on. I hit a massive wall at H4, so spent 2-3 hours grinding levels and achievements and still couldn't beat it. The game is obviously balanced for people with premium. So eventually I gave up and afk macroed shadow cores to make up the difference. F1 is worth about 200 shadow cores in ~11 minutes with the right macro. I'm now up to +9%, +58%, +43% damage to swarmings/reavers/giants, and without that I probably would have stopped playing by now.
Random info and tips:
* Micromanaging pause and using bolt/freeze spells becomes just about mandatory at some points
* Using battle traits also increases talisman drop rarity. So if you know you're going to spend a lot of them on a map, it's probably best to save up the extra and use the rarity enhancer at the same time so you get a higher tier talisman.
* Haste trait is pretty much an easy 3x xp for 28 shadow cores. With the ability to pause, speeding up the waves is largely irrelevant. Personally I start them early most of the time anyway. But I've been finding it more efficient to mostly not use traits and then periodically go back and use a bunch of them on easy fields. It might be viable to always use ~10 or so for an easy double xp everywhere all the time, but that would mean rarely having leftovers for talismans and things, and given the way the rarity boost works, I don't recommend it. With enough shadow cores on glaring, the very first field can drop talismans of level 21-49 even with only 4 bonus traits. Though doing so would cost 324 shadow cores, which is a lot. But compare for example...highest level field I've manged to unlock so far...N1, has a base rarity of only 2-23. Getting higher tier talismans pretty much means burning through shadow cores, so you may as well save them and burn them on easy levels.
* Glaring difficulty is unlocked by field 4, but requires the beam skill from D4 to get. It turns the 30% xp bonus from traits to a 70% bonus, allowing you to get a bigger xp bonus for fewer shadow cores.
* I've been finding reaver and giant damage bonus talismans to be absolutely essential. I started out trying to focus on xp, but it didn't work very well.
* Do achievements. 1 skillpoint doesn't sound like a lot but there are a
lot of them, and they add up. 959 out of 2051 of my starter mana comes from acheivements.
* Armor tearing is way more important than in previous games.