My experience in H5 is that entering Arena solo is 100% asking for an asswhooping- moreso than previous Halos at higher level MMR. It's why I've learned to love FFA, a gametype that I've never really bothered with before.
I don’t like FFA at all in H5. It seems like everyone is crouched in a corner with an auto. So there are really not that many playlists I’ll play. I generally stick to Slayer, I find it a lot more forgiving for a solo player and there seems to be a little less high ranked teams compared to Arena. BTB is fun, but it needs to be pistol starts to make it more enjoyable. Infection and Grifball are alright once in a while, but they get boring quickly. Breakout is just bad and the only person that plays SWAT is Frankie. I’m also not a huge fan of Warzone, Firefight is a nice chill mode though.
I just wish there were more modes for the most part. Where’s my Oddball, KotH, Juggernaut, Headhunters, VIP, Extraction, and etc.
I just miss the modes that made Halo what it is. For me, that's where a lot of the fun came from, all these crazy stupid modes you could play. Halo 5 has none of that, it lacks charm. The gameplay is there, but it's missing the other aspects that made Halo so great.
Edit: Ok, no more editing, you guys get the point.