As KVM is part if the Linux kernel, I assume you’ll have to look into kernel hardening instead, next to OS hardening. Hardware is also important to consider when talking about VM escaping. A CPU that supports better VM isolation features and encrypted memory
The chasing scene in Syphon Filter 1 or 2 where it ends with one guy hanging on to a helicopter and you gotta shoot him down. I loved the whole scene + music.
Old Pokémon games: catching a legendary with a normal pokeball. Defeating the legendary four (or whatever they were called) for the first time
Witcher 3, the sad story of the Baron (bloody Baron?)
Crash bandicoot, being able to reach the really high gem
Oddworld, having saved enough slaves to win the game