"Heritage" map help

[sylvanllewelyn]

I'm totally embarassed to even post this here but...

I was playing against the friggin AI on heroic, "Heritage" map and I ... lost.

No seriously, I was Haven, I tried creeping like I usually do when I play against humans, but the combination of lack of resources and hardcoded nasty creeps means I am way too slow in flagging mines.

That, and the distances of walking back and forth when you're choosing creeps, means my setup is always delayed by a whole week from my usual build order, by week 4.

I tried forgetting about development too much, and break with marksman on week 3 against treants. Bad idea... I get hit by 2 AI heroes in a row, each with unupgraded level 7's.

I know the basics and the obvious, so please skip those. What I need is map-specific hints that I can use to get through.

Losing online is okay, losing against AI is not. I need to regain some PC gaming self-esteem...