[Steam] KRF Beresad's Lair - veteran with Bruxa.
In the picture, the last remaining Brute is being attacked by 7 towers at the same time.
4 artillery towers stun enemies continuously while Waste Disposal and Bruxa's Dread Aura slow them down. They couldn't escape the choke point.
My layout is consisted of
2 DWAARPs with maxed Furnace Blast.I didn't upgrade Core Drill. It would miss the main target(Brute) more often than not, for it is distracted by the enemies from Southern pit.
2 Battle-Mechas, fully upgraded. I purchased Waste Disposal to make enemies stay longer in the choke point. Pricey but effective.
2 bare Necromancers to raise disposable soldiers.
3 Crossbow Forts with maxed Barrage. The top one is upgraded with tier 3 Falconer primarily to widen the range of the Necromancer.
No barracks, no Archmage.
A while ago I counted how many times the black dragon wakes up in each mode;
in Campaign mode: 17 times! That's 1700 gold.
—on waves 4, 7, 9 (thrice), 10 (thrice), 12 (twice), 13, 14 (thrice), 15 (thrice)
in Heroic Challenge: 6 times—on waves 1, 2, 3, 5 (thrice)
in Iron Challenge: 4 times
If you call waves early, then it may wake up less.
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I just played it again a little differently and found that slightly more efficient.
I maxed Pestilence on the left Necromancer and didn't upgrade the second Waste Disposal 'cause 1 is enough.
and upgraded Falconer on the top Crossbow Fort to tier 2, not tier 3.
It only took 11 minutes to finish it.
https://youtu.be/9DoZ_sRy8is