
This video isn't a guide on how to beat the game mode, but rather a experiment to determine the cheapest way to clear all the obsidian Gargantuar that appear in the beginning.
The obsidian spike is a part of the level so it is kept in the level and won't be considered in sun calculation.
Since glove is infinite, unless you use zombie glove or use it to dismantle plants, so it is used in the video.
About the pricing calculation-
Twin Sun-nut-
In game it costs 100 sun, as you will get a refund of 2x25 sun.
In this game mode (Abyssal Gargantuar vengeance) you will get a 2x50 sun refund, as the sun obtained is doubled.
However, In this video that refund thing is completely ignored.
All the plants are made with according to the day time costs (75 more sun for plants that sleep during day).
Timestamps-
0:00 - 27900 Sun
0:16 - 7950 Sun
0:29 - 6000 Sun
0:42 - 6000 Sun
0:53 - 5700 Sun
1:07 - 4800 Sun
1:20 - 3700 Sun
1:38 - 3600 Sun
1:50 - 2700 Sun
2:03 - 2400 Sun
2:17 - 1800 Sun
2:35 - 1650 Sun
2:46 - 275 Sun