Shit man... im so desperate... i just want to at least hear something about Grimhelm and that is not dead.
Randomly came back here to check myself, as it's quite the game that deserves a lot of attention, but the creator seems to have stress issues about his games, especially in regards to his platforming games, as they seem hard to code and design (at least from what I've been able to gather from what little posts he's made).
Anyway, I'm by no means an official representative, but I recall him making a statement a couple months ago saying that he would prefer to release the game whole, rather than in pieces, and I believe he was freezing his Patreon monthly memberships. I believe this is in fact due to him being new to the concept of Patreon, and it is probably nervous about being able to deliver content on a monthly basis, whereas he used to do things kind of at his own pace before and probably didn't want people to think he was ripping them off since he seems to work on his projects casually as a kind of side thing.
This is purely speculation on my part, but I think he kind of regrets using Patreon, especially since their recent crackdown on adult material and having froze his page for review, although I believe his choice to remove his monthly membership fees came long before Patreon started cracking the whip, so it probably hasn't hindered his work too much. Considering he has at least two? other finished games (which I have yet to play, but seem to have received high praise, one of which I think is similar to Alien Quest Eve).
All in all, considering his past fully created games, he will probably finish this one too. One can only hope though, since it has great quality, and frankly Metroidvanias are abundant these days, but rarely good as his or as sexy (at least, Hollow Knight doesn't seem sexy, but whatever floats your boat). I guess just wait patiently in the meantime, and hope they are resolute in finishing things. I would love to fund his stuffs, but unfortunately the developer seems to kind of like to avoid social media stuffs.