I have ended my Swarm That Walks playthrough. I decided that The Swarm that walks is both crappy and boring.
Some basic complaints:
You loose the ability to town portal. For some reason, all your teleportation circles disappear as well as all the forts. You canāt teleport back to Drezen or any other fort like you used to be able to.
While you do not need to rest and can travel indefinitely, when you do, for some reason that even if you make your wards roll on camping, you still get almost a full tier of corruption. With my party before, you could camp 3, maybe 4 times before hitting tier 1 corruption. Now its 1 rest only per tier IF you make your roll.
The army battles were super dull. All your normal generals go away and you get 1, level 15 swarm general who totally sucks. No offensive magic, no healing. They also are locked to level 15 and never gain xp. The battles themselves are also just dull as hell.
I am not sure what character archetype is meant to play the swarm that walks, but I am pretty sure you will need a caster who can cast a large amount of buffs and/or uses scrolls to make up for things like healing or restoration of stats. I played a wizard type which was fine.
The swarm powers while nice on paper, are not all that effective. I got to swarm rank 2 and with that I had an AOE that did like 6d6 around in a 50 foot radius for free, or one that did 10d6 around to a single target, or a buff to my armor that pushed my AC to 54. The first two are far too slow to kill a group of mobs other than trash mobs. The latter, well AC 54 might sound good, but its worthless against the bigger mobs that have like 6 attacks around but hit like a truck when they do hit. It does take several rounds for them to wear you down, but they will eventually and usually there is more than one of them.
I found the blacksmith area impossible, and gave up after like 6 tries. I had put the crusade on automatic and the only adventuring area for me was the city of Iz. The other areas were blocked by forts and I didnāt know what to do to unlock them. I presumed I needed to finish story stuff to do that. I had no access to crusade stuff so I couldnāt just skip days anymore.
With my wizard I could burn down groups of mobs and survive OK, but then I would be out of spells after a few encounters and then the killer corruption would set in. It wasnāt fun and I just gave up.
The whole swarm thing just wasnāt fun and I do not think very well thought out. It was also bugged a bit, because some npcs showed up at certain points in the castle and I had choices that supposedly gave me some extra powers, like to summon creeping doom or spit poison. After making such choices, I never got those powers or spells added to my spell book.