Just one query cropped up.

A enemy is face down in the shadows. On the enemy turn, a hero activated that card and turns it over.

Its an Ogre. The Ogre has 'bash'. (im at work so cant check but think his actions are- Bash ---> Advance.

But...on that go, I presume he dosnt get to bash. He turns over, tries to bash, cant...then advances and would bash on his next activation?

Correct.

Next turn he is already engaged then bash hits. I had a healer die in a game yesterday as he ended up engaged with 3 enemies