Please offer some advice.

I don't think I chose the wrong topic... A friend brought me the game – Heroes of Might and Magic IV, Era of Death (it features Alexander, something else, and those 6 battle-campaigns from the Era of Death...). I started playing the first campaign in the Era – you get characters, two of whom are heroes – Abbot Baldwin and a Knight (I don't remember his name) – and they have to survive and reach the gates before the opponent, all within four days. It's definitely possible to do... Done. The first mission is complete. The second mission – two level 1 heroes without an army, with 100 health points each, dealing 30-40 damage or so – in a snowy forest. An old man tells you to find the White Oracles and visit the mage Musso. At the inn, the lumberjacks ask you to clear the sawmills of monsters... I looked for the Oracles – I found two. I tried to kill the ice monsters, but what can two weak level 1 heroes do against 30-35 monsters? The monk has healing and Holy Word as spells... The monsters kill the knight in one hit, and the monk in the second... My two heroes barely managed to take down one... I searched everywhere – I couldn't find any way to progress further except by defeating the monsters and letting the lumberjacks clear the path... but I can't win!((( I even tried entering a code – to add angels to my knight and monk... the code doesn't work. I tried entering a code for victory in battle – it doesn't work either... Or am I missing something/not understanding something... or is this a pirated copy (I highly doubt the game is licensed – I have a separate licensed copy of Alexander, and the codes work there, although I haven't used them)? Is this one particularly buggy? What would you advise, what can you suggest? Is it possible to complete this mission? Sincerely, Simas