How To Lose at Dungeon Twister

Game One
Originally uploaded by GameThyme

This image is only a few turns into a Matched Forces game. I've used my Combat +4 and Combat +5 cards, and my General fell to my opponent's Assassin.

I'm in Yellow.

This is an Equal Forces game, as you can see. Here are the teams, items, and room pairs:
Weapon Master
Telekineticist
Mechanork
Ghoul
Necromancer
Assassin
General
Crossbowman

Rope
Key
Scroll of Inversion
Ring of Teleportation
Ring of Weakness
Dragon Slayer

20
22
8
7

It is (by far) my favorite style of play, but I'm not very good at it. And there are some characters in here that I very much enjoy using.

In fact, I have an excellent grasp of the theory of DT strategy, but I'm not so good at putting that theory into practice. I still have questions, however. For example: Why did my opponent choose the Dragon Slayer when there are no dragons in play? Was it to deny me access to a potentially useful item? Or was it just to confuse me?