Most recent Colossus seems to always be Public only.
Hopefully with S3 it'll be solo-able.

But that wouldn't be the newest; the newest would be the Ice Maiden. It just takes too long for me to find a group; that's the problem; otherwise, it wouldn't be a problem. It scares me if they actually release an 8-man Colossus and the people in the random groups have no idea what to do, even though there are usually YouTube videos about the tactical playstyle. I think that will be a bit of a disaster in public games.
Hope I'm wrong about that.

I believe that if they make it soloable, will become very easy. It's a complex fight with a lot of spamming attacks that do high damage and debuff, and other mechanics.

Honestly is my less favorite colossus. Too much AoE, and quick and guided attacks.

Yes please, I need to run him for FrostWatcher. Right now it's a 5-10 mins wait time for a 10 second fight.

He's just not that popular atm. And I think they're moving away from soloable colossi to preserve their difficulty.

because the weapon he drops is crap

I've never even fought Death Stalker! Although I have built the Frost Watcher by getting the parts from ETA-0.

The guy is a joke to beat now , it should have been solo several months ago like when Serena was released

Death Count has been changed to solo, meaning other players can't cause a failure anymore.

Just ignore the people who constantly gets downed and just complete the Intercept.