Well, the main thing here is to try to block all the elves right away: they shoot twice, and in melee, they only have 1 attack and a penalty. Speed, shield - and you're done!
Now I've translated a pretty good S-map, but... 10 pages of text, and besides, a Chinese person wrote it in English, so with their own expressions, probably - I was exhausted. I once played it in English, but only after reading about the events - otherwise, it's impossible, there are many hidden problems, one step to the right, one step to the left - they shoot without warning.
Справочник по НоММ-4 http://handbookhmm.ru/pamyatka-dlya-heroes-iv.html
Памятка по НоММ-3 http://handbookhmm.ru/pamyatka-dlya-homm-iii.html
и HotA http://handbookhmm.ru/vyishla-obnovlennaya-pamyatka-dlya-homm-iii-hota.html