Gasmask is already a thing unless I am misunderstanding you. For me I gave the katana to the fedora man who then was used to clear out the slime(Gym area so if you have the gym this part is done) then going to the right in the sewers the location gave the tentacle slime as a mask so I could once again go to the right into the deep sewers. As for the access card for May's areas that isn't in the current version maybe in 0.4.4 or 0.5.0 but we will see at that point. I certainly can't wait for more events and story though.
Yep, I'm only missing the green area. Which is on the left of the sewer. It keeps telling me I need a gas mask. However the right side I have it all done just can't go further I think cause the gate needs a card and I don't have that. I have slime as an ally, he helps me with the right area. So, yeah the left area that gives off a green glow, is the area in the sewer that's talking about the GasMask.
Yep, I'm only missing the green area. Which is on the left of the sewer. It keeps telling me I need a gas mask. However the right side I have it all done just can't go further I think cause the gate needs a card and I don't have that. I have slime as an ally, he helps me with the right area. So, yeah the left area that gives off a green glow, is the area in the sewer that's talking about the GasMask.