About those upgrade fights
 

It seems to me that for each fight to upgrade an item the gremlin towers are stronger.

So if I upgrade a level 1 item and then another level 1 item the second battle will be tougher. Is this correct?

Depends of the upgraded item level. For example Fine boots are a level 1 item and when upgraded to Golden boots it will be a level 4 item. So, in that case expect a rather difficult fight. The higher level of the upgraded final item, the harder the battle.

Yes, that's true, but I've had the suspicion for a while that the health of the Gremlin towers might be influenced by your leadership or level. Anyone care to confirm or deny? :confused:

Well, looking at the russian guide, The health of the gremlin towers seems to be influenced by the total health of the item defenders (the towers that Zilgadis spawns are an exception - they have 10k-15k health) and the number of gremlin towers in the item.

Gremlin tower health = 0.5 * Total health of all defenders / Number of gremlin towers

Gremlin tower stats:

1. Friendly:
- Attack = 3+Item level
- Defense = 3+Item level
- Intellect=7*Item level

2. Evil:
- Attack = 5+Item level
- Defense = 5+Item level
- Intellect=7*Item level