Don't use cached terrain. It's experimental and there's graphics glitches in combat with it enabled.

In general, you can right mouse button to get the context help description.

It's a feature. Uranus blessing is the only way barbarians can get magic weapons (mithril, adamantium, orihalicon).

There's a beta access code separate from the steam key. http://www.slitherine.com/forum/viewtopic.php?f=635&t=104778 You need to right click on the master of magic --> Betas --> Enter the beta access code. After you've entered the access code -- then select the beta-beta option. Original master ...