The essence of the tactics when playing as the Dark Elves.

Guys, I need some help! I'm having a major showdown with a friend on the "Lands of Outcasts" map! The difficulty is the second to last one (forgot the name). Here's how it starts: Red – Haven (my friend and main rival) plays as Dugal (mainly develops ballista, attack, defense, light magic, and logistics). Blue – Fortress – computer. Green – Me, playing as the Dungeon, starting underground on the upper right. Yellow – Sylvan – computer. 1. Which hero should I choose? 2. Which skills should I develop? 3. In what order should I build my castle? 4. What's the best battle strategy in the early game? What should I capture first, how, and with whom should I fight the neutrals – especially the ranged units? 5. What's the battle strategy in the mid-game? 6. How can I capture Utopia as early as possible? 7. Most importantly – the final battle against Dugal (I'm tired of his crossbowmen and the insane defense of his units). 8. Any other useful tips? I'm really looking forward to a qualified answer! Thanks in advance!