There are quite a few things in video games that bug me to no end...
Here we go:
-RPG Bosses that heal themselves
-Super Slippery Ice Physics
-Mind-reading Enemy AI
-Mind-numbing Partner AI
-Fake Difficulty (Where higher difficulty levels make enemies take and give more damage, rather than make them smarter)
-Checkpoints that are few and far between
-Save Points that are few and far between
-Unjustified DLC
-Favorite characters that don't get enough screentime (Tron Bonne especially)
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Lag (This is the main reason why I prefer local multiplayer) >