Blue crystal

What is this nonsense with the guardians? Not only did they reduce my army during the transition, but there are also 4 guardians with a huge army. How can I defeat them? 2,000 Archliches were completely wiped out.

This isn't the final version of the map, is it? (Is there no second castle in the final location?)
If so, it might be worth trying to remove the least essential stacks of low-level creatures (levels 1-4) from the hero's army; the guardians' army will become more manageable. Numerous low-level creatures give too much weight when generating the guardians' army; I fixed this in the latest version of the map.