Warcraft 3: Undead Assault 2 - Insane Mode vs Insane General Oreo

It feels bad to use the explosive charges to block the road, but it really is the only way to beat insane mode in Undead Assault 2. I've tried without blocking the road before, and its too overwhelming especially since in insane mode nothing dies easy!
I figured the best marine to use would be Detachment Commander (DC) because of all the skills he can get and also has great dps when leveling up critical strike.
The only reason I was able to win this is because I didn't get Genesis as my final mission, as that is just unrealistic and too difficult to kill as well as having other spawns with him. (2 metas, darreus, some artemis and hepa, about 10+ pudges, etc)
This has been the toughest challenge for me so far in undead assault 2.
I had to restart about 50-70 times or more. I needed to understand how to successfully extract the convoy out to safety which was a pain in the neck. Also when I got the "Guard the supplies" mission as the 2nd mission, I also had to restart every time I got it because it isn't really possible to defend for so long. (And also the convoy needs me) The other main reason I had to restart so many times, is because I continuously kept getting Genesis as the final mission. (Keep in mind I didn't make it to the end all the time)
I pretty much knew I would win when I got the "protect the APC mission" and then the creatures at the end.
I would recommend watching the convoy part if you don't want to see the whole thing, that is where most the action takes place.

Missions and Moments:

0:47 Gonarch's and Class B zombies (4:24 they are slain)
7:16 Rescue the Crash Victims
12:17 Convoy Arrives (I put smoke grenades on the road to slow down the convoy in order to give time for artemis and other bosses to reach me)
13:43 Was unlucky that artemis spawned bottom right area, so she got blocked by ecs. (Bosses need to be killed asap in order for marines to not die after)
28:06 Convoy Exits
28:34 I got really annoyed that it took me so long to turn on riflebutt and not realizing it was off.
29:08 Find Umbrella Facility Papers
31:33 Laziness punished me with a bone fracture
32:19 Satchel Charges arrive
34:02 Salt. Apparently you still need to flare in order for chopper to attack Black Knight even though I was 2 feet away from him.
36:08 Black Knight fought off all those sentry guns before dealing with me. (Which is why he lost half his health before)
42:00 Find 3 pieces of evidence
45:39 Krill
52:28 Behemoth and Gargantuan, Slain at 55:34
56:19 Heli evacuates citizens. (Why did they even come? They stayed for like 10 minutes)
57:57 Guard APC until it reaches Warehouse
1:02:23 Failed to give stun rounds to my mini after even clicking over the marine... (At least a machinegunner had it)
1:03:03 Creatures awaken and must be killed. (Final Mission)