Does A Hat In Time have co-op?
Back in July of 2016, the Hat in Time developers mentioned on Twitter that the game would include a 2 player co-op mode on release. The tweet included a photo of Hat Kid next to a co-op partner.
Confusingly, I haven't been able to find any mention of a co-op mode in the final game. Additionally, the game's Steam page makes no mention of multiplayer, categorizing the game as single-player.
I was able to find a month-old video showing that co-op was possible in the beta with console commands, but I can't tell if this is still possible.
Does a Hat in Time feature co-op? If so, how do I activate it?
It appears that no coop exists for the current version of the game until the first content patch. If the Steam page does not say it, it most likely does not have it. See Left 4 Dead 2's Steam page for comparison. It lists Coop as one of its features.
I found a rather brief Steam post dated October 8th 2017 saying it will be released in the next patch.
The Game Wiki states on its Co-op page:
A Hat in Time allows for both local split-screen co-op and online co-op. Local co-op is planned to be implemented in the first major content patch, and internet co-op "later".