Glacier continued - I already mentioned some of the randoms here but I'll add BUNNIES who have perfect MDef and really high evade (in that FF7 way of making your accuracy not matter). Kinda trolly unless I'm missing something. Sleep -> hit 'em works, as does just waiting to get lucky.
Snow Queen (2 resets) - Well okay she definitely lives up to Still More Fighting Now. ST OHKO of two elemental flavours and Fascination, which is Haste/Confuse/Silence (nasty mix; also I am impressed with how many enemies haste you to be jerks). Mostly single acts but occasionally doubleacts which breaks out of revival stall nicely. Aurora Armlet's ice absorb is great here, Choco/Mog Elemental can block wind on one person too. I use reflect but her AI seems to -mostly- know to target people without reflect (occasionally screws up though? Or my luck/memories are weird). Unfortunately Ribbon means no reflect and forgetting this is the cause of one reset.
Anyway I run Barret/Cait for Snow Queen, and indeed all of Gaea's Cliffs. I've been hating on Barret but I noticed his 255 hit weapon yields more damage than Vincent's, and he also has WAY more bulk (nice for surviving halved Snow Queen damage and various others), so yeah, with Added Cut now using that + Deathblow is good times. He also has back row Cover/Counter shenanigans. Cait I run the Mag+25 weapon so he's actually the best mage, just not with many slots. Cloud I switch to Enhance Sword on and that covers my slot needs.
I get ambushed by Stilva and he almost wipes me despite my precautions of lightning-immune Barret because his damage is still murderous and his physicals against suddenly-front-row-Barret are legit too. Fortunately Stop is great and saves me. Toxic Barf have a lot of MDef which is a pain but Bahamut works if I'm impatient/near a save point, otherwise turning them into frogs is a hilarious AND effective solution. Headbombers are weak to Leviathan, Leviathan + MP Absorb pays for itself against them. Molboros hit really hard now (again Barret/Cait team pays off, most other PCs would get OHKOed without ice res) and also inflict stop. You can stop them right back. Or L4 Suicide them. It's great. Main issue is getting Bad Breath, having a Ribbon on someone is useful for this and other fights. L4 Suicide also works on Stilva and the bats. Surprisingly useful Enemy Skill.
ICICLES are jerks, OHKO counter. They come with bats who hit pretty hard and heal to full when they do, or use confuse (blocking that is important, see Molboros). MT cleans up the bats but gives you an ugly counter. MT status works cleanly if I want to kill them, but then I realise Demi2 OHKOs the icicle ending the fights. Mwaha.
I am so pro at randoms in this game. Against bosses... not so much.
Schizo (3 resets) - First reset is a party switch for science, Yuffie gets OHKOed by multiple things in this fight. Nope. Second reset I just get overwhelmed since he can counter with a big MT physical at a bad time (it takes me a while to realise it's physical since it looks like Quake; everyone in the back row once I do). Third reset is because when you leave one head alone it gets TRIPLE DOUBLE BREATH which is high 2HKO to everyone, lol hope you didn't trigger a physical counter before this. Oh yes the MT physical counter inflicts slow. Guess how I die once.
More Barrier, back row, lots of fire/ice defence (Aurora Armlet Cait, Fire Armlet + Ice Elem Barret, Dragon Armlet Cloud... needs MBarrier because double breath hits too hard otherwise), heal slow with haste/hypers, and muscle out a long fight against 30k total HP. I decide I really don't want to see triple double breath so I kill both heads at once praying I can survive the double death counter with MBarrier but one of the heads is out of MP because I used Mindblow to drain it earlier, awesome.
I fight a Gigas and it hits very not hard for something so huge, though at low HP it acts a lot so that's something.
Tifa/Red for Whirlwind Maze, Red still doing that mixed offence thing (though I definitely feel the lower HP compared to Barret/Tifa/Cait) and Tifa Powersouling it up. I screw up the wind a lot to the amusement of my audience but fortunately the enemy you fight is really easy, Sacred Fire almost OHKOs. I also fight Gremlins and some enemy called KILLBIN but only once and I status them out so not much to say.
Jenova-DEATH (3 resets) - How nice she activates Powersoul for me, an excellent strategy. But Red Light (renamed Glare) isn't fire any more and she can mix in Aero3 which hits even harder into her tripleacts. She's fast as fuck too, and while her MT attacks (triple laser or Tropic Wind) aren't super-amazing they really add up. As does the Dual inflicted by Doomsday. Block death with two people, but I still get overwhelmed, the turns come so often that a bad run is difficult to recover from, and MBarrier is an option but really weakens my healing. On the third reset I have refined my strategy (Choco/Mog elemental is back, blocking both Aero 3 and, to my pleasant surprise, Tropic Wind; MT Esuna gets play to remove Dual since I don't seem to have a way to block that) but I get dunked on by Glare inflicting paralysis like crazy, maaan. Okay, EVEN MORE STATUS IMMUNITY lets do this, Ribbon + Added Effect Destruct protects Red, Jem Ring on Tifa, Safety Bit on Cloud. This time I win, even snagging Aero 3 on her very last action.
On the winning run I also realise that because Doomsday's second use and beyond is listed as "miss" on Jenova means the move is targetting her. Quick testing shows she's immuning Dual and (obviously) Death Sentence so man it was hasting her, no wonder I was getting owned. Sadly I'm not packing Dispel, would have used it. I manage though; by the time I realise this she's almost dead.
After the fight, I get Mug!
Sephiroth does the stuff which makes him a worthwhile villain, lots of plot ensues.
I know about Materia exchanging so Junon escape is easy mode, after realising Shinra soldiers are weak to shot I switch Barret to the Enemy Launcher and use Mug/Added Cut and he wrecks face.
I do a big shopping spree, new weapons look cool. I decide to run Barret and Vincent, as both get particularly cool new weapons. Barret gets his 140 power Solid Bazooka; a bit inaccurate but using an evade-boosting armour helps a little, and his Mug/Added Cut stings (as does his Big Shot... yes I don't have his L2 yet). Vincent gets a better +mag weapon so is now probably the best mage for raw offence. Bolt Armlets are storebought now so Trine gets to play. I run Bolt Armlets on Barret and Cid, Lightning Elemental on Vincent.
Corel - I definitely have some trouble with this! Gas Ducters get dunked on by Barret, no real issue there. Wolfmeister, though, is a jerk, he casts Mighty Guard and has plenty of HP. And then Eagle Gun has something like 25k HP (I don't scan him). Gravity to the rescue, yeesh, both Demi 2 and Laser. I mostly YOLO and poor front-row Cid dies in like three fights here which probably ends what little chance I had of using him hereafter. Anyway I'm not really optimum with time use and I seriously underestimate just how long the two big enemies will take but I win first try with about 35 seconds on the clock. Very tense!
Condor next.