Attempt

You can discuss AI capabilities and how to balance AI to make an interesting game, but some things are just glaringly obvious. A small thing I see all the time is enemies wasting AP by going one direction and then changing their mind mid run (I am not talking about panicked). The K16 fight is super weird, all the snipers keep hiding by the radio tower at the docks and in my solo run a third of enemies congregated out of cover in front of a spotlight like moths: I sat there for 20 turns or so waiting for the next martyr. At times there were 4 or 5 enemies, excited to find out who gets to die next. The only time I moved was when a Brute joined me on the roof and I had to get some distance to avoid the shotgun blowback, two more enemies eventually tried taking the forward position (smaller circle). A major endgame battle on a Mission Impossible solo run should feel like a joke. The final fight is similar. When it happens you chuckle and think "I guess I'll take it" but long term you want those fight to be interesting.

Use https://github.com/nickelc/hpk to extract the hpk archives (Data & Lua mostly). Some of the lua files are in a binary intermediary format for which you need https://github.com/HansWessels/unluac. There is a mod on nexus with all the necessary tools: https://www.nexusmods.com/jaggedalliance3/mods/38?tab=posts where you basically just run the .bat file (if you get an error you might have download the .NET 6.0 runtime https://dotnet.microsoft.com/en-us/download/dotnet/6.0)

Operation N-Night just triggers a fixed time after freeing the port sector. You go there, kill the enemies, talk to some villagers or the granny who sells the guns and they tell you, i.e. the game adds the event to the time bar in sat view. Not much else to say about it. I haven't looked into the triggers for getting Biffs call yet.

Impatient much? It's been 14 hours. Seeing how there is no n-day (there is Operation N-Night in Port Cocoa) and how you are asking about Biff I assume you are interested in what triggers the BIG world event during the campaign. Spoilers ahead obviously. Here are some developer notes from the game files, the addition of specifics in parentheses for the first two conditions are additions by me:

After I finished my first run on Commando with 2 full squads I gave a solo run with Ivan a try. If you are interested in the full details I will add a link at the end of this post but I am here to talk about the AI in late game battles, in particular the K16 and H4 fight. I am kinda insulting the AI here but let it be known I am happy this JA3 is the successor we got and I am confident it'll become a jewel. And yes I save scummed a lot in my first solo MI run, getting a Winchester to replace a failing G98 was kinda important and unless you pass on weapon mods completely there is no way around it. It is easy to shit on AI with the benefit of saving and hindsight but just keeps reading and you'll see. Hopefully that gets all the potential bad juju out of the way. A20 Battle Went from 30 to 20 enemies by thinning the herd in stealth. After that the plan to first hug and then storm the hill didn't seem to work out, especially if I wanted to save the President. Instead I tried the next best thing: Kill a guy and run the fuck away. Down the hill around the mountain all the way to the other end of the map, taking out the few that got too close on the way: It turns out that both the Legion and Spike himself, are too braindead to follow Spikes inevitable order to execute the President. If you get them to move out of range of the President fast enough they can't kill him. K16 Battle I entered through the tunnel and when I started by going to the roof trying to thin the herd of 29 it felt impossible to get a stealth kill without alerting everyone. After getting 2 measly kills I went back down to kill the Colonel real quick before returning to the roof where things started to get really stupid: Pretty much all the Rocket Men and most of the Gunners on this elite late game military base have Moth AI (patent pending, presumably). I just occupied this one magic tile on the roof and they were all dying (heh) to get out there into the light. Grab a drink, lean back and kill em outright or go for arm shots on the Rocket Men for extra entertainment. Two of them tried getting a little close (smaller circle) and in total a single Brute joined me on the roof. Next I headed to another popular hangout spot that I already knew from my first playthrough: Whether you arrive with one merc of with 12, this is THE spot where all the snipers loved to make out before getting wiped by two grenades. Anyway onwards to the last big bad boss fight. H4 Battle Ivan already cleared the H4 overworld of enemies and has 100 AGL, so why fight? Take the lower route with the mines, go into the building sneaking past the guards inside who are only 2 tiles away from you and get into the underground. Kill the first two soldiers in the tunnel, advance through the rooms on the right to prevent the MG nest from getting manned. Now there are just about a dozen people and Santiago left in the final room. Time to pick them off one by one as you slowly advance. Again only s single enemy tried pushing towards me and ran back immediately after getting wounded. You can literally wait outside this room, pop in for a quick shot and get back into cover without any of the enemies trying to push you. During the A20 fight you get under pressure but K16 and H4 are a bit of a joke. I don't know if the game eases up on you due to the massive numbers disadvantage you are at (A20 and K16 have gas bombardment if you arrive in numbers), but at least the snipers clumping up in the back of K16 was the same when I arrived in numbers. I had a harder time clearing the Fleatown Market sector because as soon as I started open combat I would get overwhelmed by all the Brutes rushing towards me. I never lasted on the roof of the house where loot box guy lives nor anywhere else. It took a lot of careful stealth kills with a lot of saving. I am not saying the AI in endgame battles should be just as aggressive, but the sometimes passive and sometimes braindead AI in these late game battles made it a bit anticlimactic and didn't feel quite like the accomplishment I hoped for. On the other hand: if you want to get the Lone Wolf achievement, now is the time. ^^ Link to more details on my solo run: https://www.reddit.com/r/JaggedAlliance/comments/15c2mgg/