Freelancer mode, the final boss of my first campaign.
I was down to 2 suspects, one suspect seemed to me to be the true target and I was correct. I shot her during the meeting behind the hotel near the broken vehicle. I was hiding in the right where bunch of stuff and barrels are. I believe I did it with a default unsilenced gun and then made a run for it from the actual point of where the shot came from. Unfortunately my disguise got blown, I pushed through my left side towards the pier, climbed in the window near cafe's toilets, rushed in one of the toilets, pacified a cook and came to the pier to witness 1.5 dozens of security guys who'd finished evac for the suspects, and only later I saw the hilarious detail - 47 witnesses.

2.5 freelancer campaigns in, zero deaths or fails so far. Hokkaido level 3 boss alerted territory
I spawn in the morgue, half a dozen of security around, 2 suspects with assassins roaming around. I find a window of opportunity but it was worse than I expected so I headed towards the upstairs staircase room that leads to Soders. A brilliant idea went through my head - causing a distraction with the power box and hiding as a dead body. But as soon as I hid, I was seen through the wall either by an NPC or by a camera, a lookout alerted the suspects from the morgue and they started escaping through the long corridor downstairs from the cam recorder. I pushed through 3-4 guys including assassins and the first killed suspect turned out to be the boss, luckily. I successfully retreated from that corridor and disguised as security and escaped.

The mission took place in the Freelancer mode. Used a single shot of the Sieker dart gun and completed 3 poison related additional tasks at once. The most effortless merces in my life.

As for an Elusive target, I completed the Splitter level carefully for the SA rating from the first try.
As for the arcade version, I wanted to pass it faster so I tried some standard strats such as rushing downstairs and getting rid of the clones early but when I wanted to dismiss the soldier at the shooting range, G key also triggered the animation for the gas flask sabotage. I was instantly spotted and tried to protect myself by being a proactive shooter surrounded by the enemy. And you pretty much know what happened next, I didn't move too far, I exploded due to that gas.
Try 2, arcade level 2 this time. I got greedy and decided to just shoot the clones when I had an opportunity and hide. This was going well but from out of nowhere I got spoted in a milisecond but there was nobody around. Not sure if Pritchard got killed and that is why I failed or something. I heard players experienced this type of a bug previously but it was claimed that they've fixed it in the end of December. (played the Splitter 10th-12th of January)

Freelancer mode. Prestige objective: explosion collateral. Tasks: Eliminate target with proximity explosion, Pacify target something... Mumbai streets. The target was the sick cinema star.
I found a good moment to throw a proximity explosive duck and pacified the target at a bridge over gutters, some security guy noticed the body, came and exploded. All the tasks complete.

Whittleton creek boss lvl 3 of my 4th campaign, alerted territory.
Task: distract target.
By scamming the game (as I thought) with the distract target task, I was down from 6-ish suspects to just 2, one was in Cassidys' on the second floor and never came down, the other was around Janus. Due to many enforcers in the Cassidys', my best entrance would be through the main door, I had to be frisked even though I was disguised as a bodyguard, the guard was so slow to approach me and finish the animation that by the time he finished there was an enforcer breathing into the back of my head. Lookout was instantly alerted, I ran behind the house from the right side to catch the suspect from Cassidys', he was killed but that gamble was unsuccessful and then I was falsely relieved after I saw no evac on the suspect from the Janus, I was almost sure that he was the one. But it turned out the target has escaped in a group of 3 suspects previously marked as non-targets. The distraction task abuse didn't work, probably because I needed not to get spotted throwing objects OR to make suspects themselves to go and check out the sounds, I dunno. Rather unfortunate considering I had all the tools in the safehouse. I felt bad and instantly left the map and a safe behind. At least I could bring my weapons back and I had only 3k merces on me. Never trusting the distraction task ever again.

Sometimes it happens that I need a pause to process the situation and come up with an effective solution not to die or fail. Like when on Marrakesh freelancer mission, I was not sure how to get rid of one of the targets because he would roam in the most populated places, so I took my shot from the best corner I could find and made a run for it towards the main exit. Unfortunately combat was initiated, soldier NPCs had no issue of quickly landing shots at me in the crowd, this is why I carry an AR from pacified guards, I opened the inventory and calculated a messy but the only solution for that situation - unloading my Shashka in the direction of soldiers and failing the kill targets only task but at least I survived, barely.

134th freelancer mission ended badly. I was speedrunning objectives to get to mastery 60 since mastery 47 (currently on mastery 56), it is grindy as heck. My aim was getting all the additional tasks, including silent rare melee takedown. I was wearing a wrong disguise and my target was one of two guards in a trespass area, I tried to get rid of the other guard but got spotted. Whatever, shot one guard, another pair of guards heard that, I rushed to close combat melee my target with a stick instead of throwing it. My mistake was the QTE, since I got close to him, he started fist fighting instead of getting smacked by my stick. I missed the Q and wrongly tapped W button. He slapped me to the ground, over. Don't care for the lost 260k, I already got the essential tools back. Hoped I could avoid dying in this mode, at least not that stupidely.

Colorado freelancer, 1 target. Tasks: dart gun, sedate, no damage, legendary HS.
The target was in the greenhouse in the middle of the map where a soldier infiltration is. Well, at least I got the opportunity to engage my target but it didn't last for long. He was standing or sitting by the door, I sedated him with a dart gun BUT he fell head away from me so I couldn't make a headshot, I quickly tried to yeet him further inside to get a shot on his head but got spotted. I believe I HSed him but then the chickenary began, I pushed out of the greenhouse to the left trying to kill as many as possible and have successfully hid in a bush very close to the location. 10+ armed guys missed me there but I decided it was better to run and I ran towards the main road but was quickly discovered. I started running towards the western bridge, killing maybe 5 guys that were coming from everywhere, and catching so many bullets that I thought I was demigod. I took my first left turn because I had 1hp and had to break contact and later slipped through when on my way to exit. Escaped near the tower.

Freelancer showdown in Bangkok. I spawned on the 1st floor bar in the back behind the reception. I saw no white circles over the suspects' heads, I thought "ok, it's safe" and stopped the blending in animation of drinking. After I'd done that, the suspects became enforcers and I couldn't blend in back lol (only poisoning option). I got spotted and ran away in a shame up to the right side of the hotel and took a turn downstairs for staff area where a man and a woman staff are near the basement. I heard Diana say that my target was escaping, and I realized one of suspects chased me with a ! sign. Got her quiet in the staircase, wasn't my target, rushed out back throught the main entrance of the hotel and prepped for the most desperate play yet: slowly took out my common sieger-300 I was carrying, in the middle of the street. All the guards were far enough evacuating targets, two ran for the pier, one for the left side of the map. Engaged the pier couple, target down, quickly got my gun back in the case and retreated to the staff near the basement where I got the first suspect, took the clothes and escaped through the right side exit. "The flimsiest job I've ever seen".