Enough with the tales of woe, tell me your good luck stories!

Alien ruler executions.

I actually have 2:

1. I had just gotten War of the Chosen and had trouble with all the chosen but specially the Assassin. Anyway early in a campaign she pops up on a mission. A couple of rounds later an advent trooper takes cover behing a gas pump in a gas station. I hit him with a grenade not knowing what kind of hell I'm about to unleash. The whole gas station plus a few cars and stuff nearby explode and with them the Assassin who was hiding in that same gas station!

Instakill! :D

2. Late in a campaign I get the "protect the device" mission down in the sewers. I rush right for it and see no opposition along the way! 2-3 rounds later I get there and they are all smooshed around the device, 4 pods!

I get everyone in position including the reaper. Next round it was like I couldnt miss a shot if I tried! reaper took out 5 with the 2 claymores + plasma grenade, ranger shot one with the shotgun, but heres the luck, grenadier landed a chainshot (2 shots) at 55% on the gatekeeper and ruined its day. Sniper one shotted a full health advent officer at 48% with Deadeye. The other grenadier one shotted a full health red MEC with Deadeye at 50% (gotten that ability in the training center).

All in all I killed 9 enemies during that turn and left a couple of sectoids and 1 or 2 Spectres. The black robot swarms with shadowbound!

Triggered 2 pods of sectoids (2x + 3x), and 4 of them ran next to a car with a 5th that ran a bit further. I could aim a rocket to hit both that 5th sectoid as well as the car for easy pentakill, so I do it.

Rocket goes wide...

...into an unrevealed pod, and still hit the car (but on the other side), giving me 7 kills and a lone sectoid that found himself on the wrong end of a shotgun.

Two stories, both involving Reapers.

The first was from my most disastrous successful run of WotC I have ever had. I had a facility raid that needed doing, and my underpowered team had just been forced to retreat. I had a single reaper left that was able to go out and days on the doom timer. She gets in with minimal problems, but planting the charge reveals her to the encroaching squads. After a round of missed shots blows a hole in the wall, the Skyranger pulls up nearby. The only problem is overwatch. With nothing to lose except all of her health, she runs for it, dives through the hole in the wall and climbs the rope to safety.

The other is from my most recent campaign. The last Avatar is proving impossible to hit, the Commander's Avatar has taken damage and is in a bad position, and an attempt to solve the problem with a superior extended magazine Banish goes badly, especially since it has my ranger mind controlled. The enemy turn comes around, and the shots on the commander miss. But the important part for me is the ranger. They run down past my reaper and turn around. I do not know why, but instead of shooting, they decided to run in with the sword. Maybe it was a more reliable chance to hit? Regardless of the reason, these two bondmates are heading for a fatal collision. Then, just before the sword is pulled out, the mental clearing from being adjacent to a maxed-bondmate triggers. The ranger crouches down beside him and the battle ends shortly after.

I mentioned this story in another thread not too long ago, but in a recent Enemy Within run, I aimed a rocket at a thin man on the "Portent" mission. The rocket missed - and killed two thin men instead.

Zhang literally shredded a cyberdisk after hitting both heavy laser shots with AT rounds, with the first one being a crit. You know how low heavy aims are.

And another one involves having the lost target the sectoid my ranger missed, and beat it down to death. Learned that the melee+3 counts for every hit.

Years ago I cleared the final encounter with the Avatars with three repeater executes from a Sharpshooter.

Not too terribly long ago I put a Specialist with Guardian on overwatch. Out came a pod of baddies. Gaurdian procced five times for six successful shots, killing three of four Advent in the pod.

Same Specialist, later in the mission (Hunter Chosen Stronghold). Enter the chamber, clear out the initial pod. Specialist goes on Overwatch, and I move another soldier forward to trigger the Hunter showing up. Gaurdian procs for four shots on the Hunter, killing him the first time around without anyone else needing to lift a finger.

Had a mission that was really going down the tubes. Success, both in likelihood of getting out without one or more deaths, as well as beating the mission timer (destroy the relay), was hinging on a 38% chance to hit shot on an Advent Officer - with a soldier who was standing in the middle of the field, no cover. If I missed, that soldier would be dead, the soldier who was bleeding out would die, and I wouldn't have time to destroy the relay. Crossed myself, hit Shoot. Blam. Next turn destroyed the relay, and limped home without any deaths.

So... there's that one time I executed the Archon King as soon as he showed up in the campaign and before he could even do anything. There's also the time a Chosen weak to Reapers and explosions ended up standing next to a Gas Station with a Claymore under their feet... Remote Start overkilled it for like 39 damage or something.

Was in the middle of the first Supply Crate mission for my latest playthrough with heavily increased numbers of Lost, revealed the Alien Hunter Archon with my Elena and on her opening move my sniper executed it with a 5% chance.

Considering all I had at this point was literal baseline equipment, I think that would have been a wipe otherwise.

Not my own in this instance but one of my favorite moments in XCOM 2 history is when Xwynns went for a 20% Sectopod hack under dire circumstances and got it.

Timestamp here

First encounter with the beserker queen in my current playthrough. My grenadiers weren't in range to shred armor or use the frost bomb, but my serpent suit ranger managed to freeze her. She was right in front of two of my soldiers, and I knew that soon she would thaw and kill me, so I decide to shoot her with my sniper just to try and get some damage in. 50 something percent chance to hit, 5% chance to use the repeater. Hits both of them, instantly executing her and saving my ass

Avenger Defense.

Disruptor was in range of my turrets. All I had to do was a stealth Ranger move out to make Bradford notice. Done in 2 turns.