No upgrades nor aura maintenance done besides the buff beams with my stats. 2:10 initial build time with 3:15 to 4:30 total combat time depending on spawn RNG. So under 6 to under 7 minutes total run time.

Use 1 AFK Summoner with the App/Huntress guardian pets combo equipped. Make sure to get the rest of the characters in during Wave 24 for max pet rewards; Summoners only as well if you want to make sure only armor drops during the wave.

Hint 1

• The Ensnare aura is downsized twice to help speed things up.

Hint 3

• Place the AFK Summoner here with the App/Huntress guardian pets combo equipped.
• The one Mortar tower is pointed AWAY from the south corridor. Its only targets are swimmers and spiders that come from the east.
• The Ensnare aura is downsized three times and placed a little to the southwest of the Strength Drain aura.
  • The smaller size makes sure that the closest spawn to the east doesn't get slowed down.

Notes:

• I just used longer beams out of convenience and speed rather than having to nitpick the exact size since there is extra DU leftover that didn't need to be used. Hint 1 could use a 5 du buff beam and 2 DU reflect beam instead. Hint 3 could use a 1 DU reflect beam instead of the 2 DU one.

• Downsize the Ensnare auras less to slow things down and give more breathing room if the ogres are reaching your tower stacks.

• I don't use a Summoner with the Monk/Huntress guardian pets combo on Hint 1 and then tweak the build differently because the mortars get too inaccurate at too long of a range. For the mortar towers, there's more bang for your buck with the App/Huntress guardian pets combo at closer range.

Example run: