Tech Points-To research new abilities, weapons, upgrades, spells, units and so on.
Magic Points-To cast spells that you've researched.
Paths are also added.
Paths are like Races, where each Path has a different set of units, spells and so on.
Technological Path-Versatile and balanced
Demon Path-Very powerful but difficult to play
Druid Path-Overwhelming numbers, easy to play
Tamer Path-Depends a lot on luck and how the enemy is playing.
Also, when your Hero hits level 12 he gets a Stone of Teleportation, which allows him to travel from other parts of the Dungeon to his city immediately. He also gets a jewel which allows him to open the Dungeon Door and explore the inner Dungeon, which is very, very, very dangerous.
Also, at Safe Haven(a spot where you're completely and utterly safe), there are now some Merchants selling items. On special occasions, Traveling Merchants will sell things related to that occasion. For example, on Halloween you can buy a scroll of research allowing you to research the unit Floating Pumpkin. On Christmas you can buy the Snow Spell Set-Blizzard, Snowstorm, Icy Chill, Freeze and Avalanche-and a signal stone which will attract Santa and let him give you useful presents like a couple of Super Potions or a Scroll of Research.