time to copypaste my post from the other thread whoops *the one chatango emoji with the hands covering the face that i'm too lazy to gyazo*
I know a lot of people have been struggling with it and some of the rewards require a ridiculous amount of investment, but I'm honestly having a lot of fun with the Tempest! The 5-stage Lunatic tier is pretty comfortable for me; I can usually get through the first 4 stages with ease without it becoming tedious, and though sometimes I still wipe on the final stage if I mess up my positioning or the composition is really against me I've been getting much better at managing it.
If you have a unit who can bait and counter-kill the mounted mage on the right, someone who can tank the mounted unit on the left, and/or someone who can oneshot the armor unit and get danced/drawn back out of the mounted mage's range then it gets much easier to deal with. Veronica is really rough, though, so I'm just lucky that I have an Ike who can counterkill her. I don't know I survived before Ike, honestly... his tanking abilities plus Ragnell plus Heavy Blade is pretty bonkers. If I wipe on the last stage
I've been struggling a lot in arena lately (ever since making my Ike +2 [because the RNG gods are cruel and kept making me roll Ikes in front of my friends who wanted an Ike and never managed to roll a single one] I keep running into a lot of whale teams), so Tempest is really nice since it's challenging without being frustrating (usually) and you still get rewarded for your "streak" being broken!
It's also funny because Genny was making arena really difficult for me when I had her as a bonus unit in arena because she wound up being kinda dead weight despite being a pretty solid unit, but in the Tempest - with the exact same team composition as those weeks in arena - she's an absolute godsend. My team works really well in there, with Ike there to counterkill most things (especially Veronica), Linde to be the glass cannon to end all glass cannons, Gronnraven Camilla to take care of colorless & blue units in addition to being a surprisingly good tank herself, and Genny to both provide healing and finish off some units in addition to being able to tank magic pretty decently. It's really nice having a mode where healers aren't just relevant, but practically necessary!
...Of course if my first team dies then I'll probably wipe entirely since Ike is my only red (trying to get up Xander but my stam is so dedicated to Tempest now that he's hanging around in the 20s...) and both Linde and Camilla are my only 5* leveled ranged blue and green. Everyone else is either colorless - not particularly helpful on that last map, especially since Kagero only has two infantry units to be useful against and she can't oneshot Veronica from full HP even with Desperation active in my experience - or a lancer (AKA instant Veronica death). I've definitely had a couple of clutch victories with my B-teams, though, and it can honestly be a lot of fun to figure out how to win with a bunch of units who really aren't suited to the map!
Also a tip: if you don't have any of the bonus units all leveled and 5-starred and what-have-you, you can start the Tempest with a team of just that bonus unit (probably a 3* M!Robin since those are fairly common), let them die, and then bring in your A-team and only suffer a minor penalty to your survival score while still getting the +40% bonus from using that bonus unit! It's been a lifesaver for me since the path to the Quickened Pulse seal is going to be tedious enough With a bonus unit, much less without one.