Here, you need to choose a tactic to win quickly in the subsequent battle, or will it take a long time to manually grind it out?
I found a way to win in 3-4 minutes (depending on how quickly you act).
Added after 13 minutes
More details - there are 3 fundamentally different ways to win.
1. Win on day 1.
2. Win on day 2.
3. Win that will take a very long time. Within the requirements, winning on the first or at least the second day is not considered. But it can serve as an easy task =)
The first two victories can be achieved using bugs (this is already obvious:D), the third - without them.