It's been a while since that question was asked, but now there is the new Horde Chess Blog (Full disclosure: I wrote it), which has both opening and general tactics guides, with reviews of example games.
More content is expected to be added with time, but so far, it has general tactic guidelines.
The guideline for Black (the pieces) are:
Attack from behind. In that method, the queen sneaks into the first ranks and then tackle the pawns from there. This incursion typically involves breaking the pawn wall in one of the marginal columns (a or h), since the pawns there are protected only by one pawn. (the intrusion tactic)
Or the alternative blockade tactic
First, black positions his pawns and pieces in a way that prevents any white pawn advancement. Then, he moves one of his pieces back and forth, forcing white to eventually make advancement and lose pawns.
For White (the pawns), there is the Phalanx tactic:
Just advance all of your pawns until you get to promote one of them to a queen. Once you have a queen, in most cases winning is straightforward [...] with enough patience, caution, and a little bit of luck this method will work flawlessly.
In addition, there is a post on common Horde Chess openings.
Hope this helps the OP or whoever watches this question now.