I just barely got through the level in XCOM: Enemy Within where the aliens invade HQ, that was Hell on Earth. I wrapped up for the day, quit out, then had that awful thought - "Did I forget to save?" Usually the answer is no, but this time...
Running towards a quest marker with my giant uber-bear in Far Cry Primal. We're just going down a gently-sloping hill, and suddenly I hear a CRASH and a sad bear noise, and apparently my bear had somehow killed himself on this minimum of angles hill. Wat.
I spend so much time (and food) trying to get a Papa Bolt in Yo-Kai Watch that when one finally joins me, it has a personality that loafs easily. The reason I wanted one in the first place was for its anti-loafing skill.
Gathering the assorted Bonus Rings in Sonic Forces. Park Avenue has been annoying because there's a ring I'm having a lot of trouble finding, but easily the most frustrating ones so far have been the ones in Aqua Road. For context, you are basically on waterslides for pretty much the whole level. This forces you to keep moving forward at high speeds, makes it 100% impossible to move backwards, and makes handling to the left and right somewhat tricky. 3 of 5 Red Star Rings must be collected while riding these waterslides. Doesn't sound that bad right? It gets much worse when the motobugs show up and make you go bouncing all over the place. I tell ya, it is infuriating to know exactly where every ring is, but have to take dozens of restarts just to collect one because you keep missing them because fucking motobugs!!
Sounds easy at first but you have to do it while in slo mo arrow time and cause of it your stamina is eaten through quickly meaning you can't glide very long which often means you drown or get a game over by hitting the rocks