Dark Alley is the 1st level in the Dream Forest
Starting Goods: 900
Allowed Towers: Archers, Barracks, Altars, Catapults
Top: 30 Tree Sprout, 14 Flower Elf, 11 Dark Elf Guard, 22 Dark Elf Archer
Left: 32 Flower Elf, 17 Dark Elf Guard
Bottom: 10 Dark Elf Guard, 12 Blade-toothed Panther
Towers / Skill Needed: Earthquake, Ballista + Explosive Shot
Tower Levels Needed: Catapults Excellent-1-30 (easier with higher level), Archer Excellent-2-21 (can most likely be done with much lower level)
Use magics where there are a lot of Dark Elves and Flower Elves. They are the hardest things for your Earthquakes to kill. Use Reinforcements to help keep the enemies from attacking your heroes.
Remove the tree stump for the tower spot and build a T3 catapult.
Place heroes as shown.
As soon as you have enough goods, immediately upgrade the T3 catapult to an Earthquake tower
As you get more goods, build another earthquake as shown.
Move heroes slightly towards the exit if needed.
As you get more goods, build a Ballista + Explosive Shot
If you still can't beat this level, Fortify your Catapults. with a certain level of catapults this level will become super easy.