Angry? You need to relax.
Most of the 'issues' you mention are necessary balance changes or exploit fixes, nothing to get upset about.
A few points:
Hawks/assassins. That was a silly immersion-breaking exploit and was removed for good reason (why would an assassin kill a hawk over a wounded hero?) Look into ways of getting the guardsman promotion such as combat4>guardsmen, bannor, aristocracy+royal guard. Or assassinate assassins. Or just keep an eye out for assassins and move vulnerable units away from the front line.
Kuriotates. Sprawling is key to the uniqueness of that civilisation and getting around that with unrestricted leaders was a loophole, now closed.
Acheron. You need to actually capture him to allow movement, the default barbarian unit cannot move.
Exploring. I'm sure it is intentional that most dungeons are dangerous. Try using units with some experience to explore them for a better chance of good outcomes (not heroes though, too risky!) and leave them until your cities are secured with defensive units.
Against the wall. You will have to build some settlers...
Also, relax.
Most of the 'issues' you mention are necessary balance changes or exploit fixes, nothing to get upset about.
A few points:
Hawks/assassins. That was a silly immersion-breaking exploit and was removed for good reason (why would an assassin kill a hawk over a wounded hero?) Look into ways of getting the guardsman promotion such as combat4>guardsmen, bannor, aristocracy+royal guard. Or assassinate assassins. Or just keep an eye out for assassins and move vulnerable units away from the front line.
Kuriotates. Sprawling is key to the uniqueness of that civilisation and getting around that with unrestricted leaders was a loophole, now closed.
Acheron. You need to actually capture him to allow movement, the default barbarian unit cannot move.
Exploring. I'm sure it is intentional that most dungeons are dangerous. Try using units with some experience to explore them for a better chance of good outcomes (not heroes though, too risky!) and leave them until your cities are secured with defensive units.
Against the wall. You will have to build some settlers...
Also, relax.