First, try slowing the whole game down. The GoG DOSBox version defaults to 4,000 cycles, but I find WC1 unplayable above 3,300 cycles.
Are they all that difficult as WC1?
The games are difficult in different ways.
WC1 is mostly a targetting challenge. Lead your target, fire a burst, evade while your energy regenerates, repeat.
WC2 makes the targetting easier (on ships with ITTS) but the Kilrathi are more accurate and have more powerful guns. Also, WC2 has a rarely-mentioned debug feature, where you can adjust the AI difficulty. It's mentioned
here - use the "Origin" command line parameter, then while in flight press "Alt-i" to increase AI skill, and "Ctrl-i" to decrease it. If it's working, you'll see red text saying "Dynamic Intelligence = #". You may need to use the shortcut multiple times before the number changes; possible values range from 0 to 10. Also, when you destroy ships the number silently increases, so you'll need to lower it again periodically. Just to be clear, this is a cheat code like any other - but it's much more subtle than the commonly-used alt-delete "finger of death". If you want to
experience WC2 without spending months mastering its quirks, use it. For me and my suboptimal reflexes, it makes the notorious
final mission of Special Operations 1 an interesting challenge instead of a frustrating curb-stomp.
WC3 is very different, and not just visually. As others have said, you finally do get a choice of difficulty levels. It's also a more tactical game, needing more thought and less twitch reflexes. You'll face multiple Kilrathi ships simultaneously, and need to decide which are the most immediate threat, and plan ahead to get them in your sights.
WC4 is like WC3, except it has quick-time events every 30 seconds where you're told someone has missile lock and you hit the "launch decoy" button.
Privateer can get tedious. You definitely want to upgrade your ship a lot, but enemies scale with it. So, don't just grind for cash and then fit your ship with the most expensive gear available - grind for cash and fit your ship with the most
cost-effective gear available. Other people have better advice here than I do.
Also, the losing path in WC1 is *very hard*. Quite a bit harder than the winning path.
This is good advice, with one exception. If you just can't beat
Kurasawa 2, accept the loss and go to
Rostov.
[Edited to change the command-line parameter "Origin -k" (which also grants invincibility) to "Origin" (which still enables the AI adjustment).]r