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.
YMMV: Heavy Barrel
Crowning Music of Awesome: The background music for this game is really good, especially the arcade version (which has never been recorded on youtube or anywhere)
Game Breaker: Understandably, the game gets much easier once you get the titular weapon. If you're careful, you can save the final piece of the weapon just long enough to vaporize the Final Boss with it.
Goddamned Bats: Jetpack enemies will circle you to avoid your shots and piss you off.