2. BB from barrel standing up to barrel lying down
3. Barrel lying down. Reflect (3DU)
4. Refect on barrel (2DU)
5. Relfects connect on barrel here
This clears the map nicely of those pesky spiders. Should tower kill Copter as well. I like the minions because it ensures the Wasp is aggro to this area. Start with Turkey then go back south to meet the Wasp. If Copter isn't tower killed finish it off. Draw the Taverkeeper towards hint 2. If done right he'll get stuck against the crystal and the golem helps with some dps.
My Summoner is 8400+ Thp. Add another ogre if necessary because the wasp can do some serious damage. But you don't want too many because its more to upgrade.