These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Brilliance: A lot of people were unimpressed with the final boss of FLUX; it's an empty room, the object being to bounce the ball 15 times without missing. It may seem relatively uninspired — that is, unless you've lived long enough to remember the Atari2600 games, and you suddenly remember the original Breakout, and you remember what happened after you destroy 2 entire walls of bricks. The answer? Nothing. You're left with an empty room and you can simply bounce the balls around forever until you lose them all, because there is nothing left. The game is over.
Furthermore, Neuse said that in Runner, they added the ability for CommanderVideo to kick down walls because they were so annoyed at the walls in Pitfall. Similarly, in FLUX, you can bust out of the empty Breakout room and into the beyond... because, after all, CommanderVideo cannot be stopped.
Game Breaker: The bosses of the second and third songs of VOID contained a horrible infinite score exploit if you stall forever while in "super" or "ultra" mode and steadily gain points. The updated version of the game disables the automatic score gain of those modes at the bosses.
Tear Jerker: Admit it, you cried at the end of FLUX
More like constantly through it.
All it takes is that tiny bit of Transition and this troper starts sobbing uncontrollably.
And after the emotional ending and break down, you get kicked out again to the menu, where Strange Comfort plays while the camera pans to the blue planet. If you held it in before, avoiding breaking down here is next to impossible.
Likewise the bits of Impetus in CommandergirlVideo's crying at the end of FATE are enough to bring tears to anyone's eyes
That One Level: Level 1-11 in RUNNER is disproportionately harder than the majority of the game. No wonder there's a Steam achievment for passing it.
3-2 Retro Challenge makes many perfectionists want to run out and murder the level designer.
BEAT is generally regarded as one of the harder games in the series, but the fifth section of Descent stands out in getting people stuck. Immediately, you have to survive a difficult challenge involving hitting erratically bouncing beats with a tiny paddle. If you managed to get through that, soon after comes an onslaught of bouncing beats that jump across most of the screen and move so fast that it is very difficult to spot the pattern. You'll be lucky to survive through Nether unless you know where to move beforehand.