I'm pretty satisfied with the opening to this one.
On wave 1 I only build two towers, because otherwise I have around a 50% chance that I'll end up without two upgradable towers before wave 4.
After wave 3 I can build two more towers and upgrade once, even without gold drop. I upgrade the undead tower, since it would loose it's charges if I upgraded it at the start of wave 4. Then I start the next wave, which gives me more gold (out of my mine), so I can upgrade the temple too. So my opening gives me exactly 5 towers, two of which are level 2, by the beginning of wave 4, without any coins or potions needed. I use two terror spells to survive, but I get through. Took me ages to figure out this method. :)
The rest of the match is no big deal. I use up all potions and scrolls in the end, because there are achievements to be won. (E.g. "drunken master".)
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