Basic Goals: you gotta get them.
-Make it through the first winter
-Reach the Dwarven Economy
-Seiged for the first time
-Ambushed for the first time
-Have at least one champion in your military
-Survive an Ambush
-Survive a Siege
-Experience emotion towards one of your dwarves
-Reach your fortress in adventure mode
-Kill a semi-megabeast in adventure
-Become the enemy of a civilization
-Find at least one underground feature (both, in dwarf mode, and adventure)
Advanced:
-Fun with magma
-See every underground feature
-Water structure
-Mega-construction
-make a creature on your map extinct
-build an arena
-build an execution chamber
-Do something that makes you feel absolutely dwarven
-Get through an aquifer
-Fortress on "unsustainable" land
-Learn acsII graphics
-Wage war on all vanilla civs (excluding dwarves)
-Self-destruct a fortress
-kill a noble
-make soap
-get a king (HFS not counting)
Extra-hard:
-Reach 200 dwarves
-Smooth a mountain
-Do a Giga-construction (must span multiple z-levels, and have a large base)
-blot out the sun.
Extra-curicular: Overtime fun stuff.
-Play a mod
-Make your own creature
-invent a new weapon
-join a community fort
-Do a bloodline/succession game
-Challange fortress
-Run a community fortress
-Report a never before seen bug
-donate to Toady
I don't get far in adventure mode since it feels meh and I always get killed by a wolf.
Fortress mode stuff is mainly because I always abandon after the first couple years, out of boredom or problems.
Maybe add a few like:
Basic:
Kill a caravan of elves
Over Complicate a simple task.
Advanced:
Get through 5 Years in fortress mode
Don't kill Migrants
Extra Hard:
Get through 10 years in fortress mode
Defend your fortress Successfully without traps.
Extra: Build an Above ground fortress.