For me, the most interesting option in extremely long games is leveling up a shaman based on Keegan, meaning the main focus is on spells. There's no need to send goblins into attack; they should be used for harassment and support only. Usually, the focus here is on War Cry. Occasionally, switch to Bloodlust and Fright. These are the main spells. The main difficulty with this leveling strategy is the need for the difficult-to-obtain skill Battle Shout, which is analogous to magic. If you can get it, the game will go smoothly. It would also be good to get Empathy, and in combination with a set of humans (roughly speaking, the hero from the set gets Empathy, and if such a skill exists, its effectiveness is doubled). The main thing is to protect the goblins. They are the strength of our shaman. This development has proven effective in several games. 3k damage from War Cry, of course, can't compare to Shock in the hands of a Warlock, but it's still powerful.