Incredible atmosphere and audio all around. Game is really dark and i love all the effects of lights and sparks all around. Very spooky.
The heavy foot steps of isaac, weird faint chatter in the background, necro moving in vents and intensity music when a fight comes. Keeps one on toes all the time. Love the sound in this game.
Perfect pacing and doing actual space related objectives aside from killing necros. Like Throwing a astroid into the space, aligning dish antenna in zero g, moving around in space for a short period of time. All the cool stuff you do. And those jetpacks and suit are so iron man esque.
No wonder this game was/is something special and callisto had huge shoes to fill.