Well it is day two of the TK online test. I got to play a full game. Only a practice game, but a full game none-the-less. It gave me a better picture of what this game is. There are other units you can get. As you upgrade your gear you can buy summon spells which summon groups of units. These are time limited but you can use them over and over, even if you have a full compliment of units. As far as I can tell if you wanted to be patient you could summon tons of units and swarm your opponent. This makes an interesting strategy where some people keep the enemy busy while you have someone in the rear protected summoning a ton of units then sweeping in and wiping out the enemies base.
I tried a couple of play modes. Death match plays for an amount of kills. These are player on player kills. Not deaths from random mobs. Also siege mode which requires you destroy the enemies base. Both are interesting. The siege mode is a long slog with many human players because it takes awhile to dig away at each team's base. Your heroes aren't that strong and expect them to die a few times. The healing potions are not that powerful. Taking one isn't an instant save and they're better used when resting between fights.
I shot a video. Its uploading now. When it is up I'll attach it. It shows some gameplay during a siege match. I'm summoning units and heading forth to attack. The heroes abilities seem to be hit and miss. I use some..but other ones don't always seem to fire when I try them. I need to pay closer attention to error messages to see if there is something up with that.
Defeating the bases are a challenge. Each base is guarded by pre-set towers. They're a little strong and if you go at them alone, probably you will die. You should take some generic units and summons with you. Each base has some buildings that spawn units who rush forward and attack. You can bolster them with summons to make larger armies. The units you summon are controllable, the base ones are not. While doing all of this you should also try to manage your inventory and crafting. It is a pretty tense game during a busy fight trying to manage everything. However, that is what makes it exciting.
Had some issues with the video update last night, here it is: