There's actually more skills in DD than in DKS. I can summon 8 skeleton warriors at the moment and this should continue as I level up these skills ever more. I can also summon a death knight, cast fireballs, freeze my enemies (very helpful skill against tough enemies), create a poison gas cloud and strike enemies in a shadow warrior form which charges towards them. There's still plenty of more offensive magic skills to learn (there's more than DKS' 4 attack spells) along with defensive and boosting magic such as bless. There's also crafting skills to learn. I'm also learning many passive warrior abilities to increase the damage of my mace and to increase how much fire damage it does.

I'm quite rich in DD at the moment and very powerful. I'm in the middle of destroying the entire Orc camp. I've gained a low reputation now, when I entered Rivertown's marketplace, the guards attacked me and I was forced to kill them.