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.
Breather Boss: Vestra's boss, the Hammerhead, is fought in a room full of destroyable stalagmites that fall to the ground and those that weren't destroyed by your own fire respawn on the ceiling. However this is his only attack, if you destroyed all of the spikes it will only stand here tilting is head up and down until you kill it.
Goddamned Bats: The red fighter planes on Ares are ridiculously tough, taking 16 laser shots to kill while other fighters take 2-4 shots.