So, I'm a reasonably long time player - I've got a few hundred hours logged, mostly in older versions, but back then I was truly terrible at actually knowing how to play the game in anything even resembling an effective manner. I'd build unstable rockets and wonder why they'd flip out immediately after launch, or try to solve Delta-V issues by just jamming more fuel on board. However, thanks to the wonderful KSP community and a number of excellent "How To" guides (and mucho props to Scott Manley's video series too) I feel like I've got a much better handling on concepts like orbital mechanics, capture maneuvers, rocket design etc.
At least I thought I did...my first interplanetary landing in my current Career mode was a probe on Ike. And by "landing" I mean crashing at a few hundred ms-1. I somehow forgot that the Probodobodyne QBE doesn't have any internal torque and of course I didn't attach a reaction control wheel. Cue frantic collection and transmission of whatever science I could gather in the moments before impact.
Second effort was a rover aimed at Duna from an orbiting mothership. I thought I'd solved the problem of how to stick a rover on a rocket by just sending up the components in KIS containers, adjusting to a trajectory that would take the ship into atmosphere, building the rover in situ and then pretty much throwing the thing out the window at the planet. All was going quite well too. After a few minutes of terror wondering whether the amount of parachutes I'd attached would be enough, the rover was approaching the surface nice and level at about 8ms-1, touching down on a slight slope in the Midlands...whereupon it immediately proceeded to flip over onto its back, wheels spinning uselessly, almost exactly like a stranded turtle. The extended solar panel even looked a bit like a tail. Fortunately the antenna didn't break in the process, and I was able to transmit the surface science. So instead of a rover, I built myself a very expensive probe with purely decorative wheels.
All this unmanned tech didn't seem to be working out quite right. If I wanted an actual landing I could be proud of, my Kerbals were going to have to take matters into their own hands! Back on board the aforementioned mothership, the course was readjusted to return to Ike. Bravely, Maudolin Kerman clambered aboard the attached lander module (slightly modified from versions that had been successfully trialed on the Mun and Minmus) and undocked before burning retrograde, plummeting towards the little satellite, hitting full throttle a few hundred metres above the surface and executing a near textbook suicide burn. The lander stayed upright upon touching down! No tipping, no spontaneous exploding. Finally Kerbalkind could truly say they had walked among the stars. With a flag planted and surface science gathered, the mothership was successfully rendezvoused and docked with one orbit later.