I played the #Marathon "server slam" for exactly twenty five minutes. i.e. as long as it took to finish the tutorial mission. I never tried loading into a real mission. Why?
I couldn't figure out what the fuck I was supposed to be doing nearly all the time; and I couldn't READ THE TEXT; icons were too similar; the color choices, while aesthetically pleasing, made some shit really hard to discern details.
1/

Bungie ask Marathon critics to delay "full reviews" till the release of an endgame zone, and I am wistfully reminded of Vault of Glass
Bungie suggest that Marathon reviewers "hold your full review and impressions until you play Cryo Archive, Marathon's pinnacle endgame zone and experience".