MASS EFFECT
ADVENT RISING
RODENT REVENGE
I enjoyed convincing Saren to blow his own brains out, I was the opposite in liking him, he just seemed like such a dick so I was so glad to kill him.
ADVENT RISING
Killing your wife/brother at the end of the game, mainly because I still cared about them and had no idea what happened to them, so I felt a little bad about killing someone who I could've eventually saved.
RODENT REVENGE
The cat that you box in and turns into cheese, I didn't mean to kill the kitty....I LIKE kitties :* (