Your criticisms are certainly merited; I consider the game essentially done, so unfortunately the flaws will have to remain.
The "impassable wall" with the matriarch is actually just a hit-circle with a very odd way of handling collision that kind of makes you stick to it (my cope is that I'm still learning). With a leap, you can get out of it.
I vaguely feel like I encountered that "level ends early" glitch in development but parsing through the code again I haven't the foggiest reason why that's occurring. The level should end when the timer is zero, and the code SEEMS to indicate that...maybe after a reset, some things aren't initialized properly? I don't know.
The bread spawning under the UI elements/the Matriarch is sorta intentional, sorta not. I knew it could happen during playing, but I guess I didn't think about it too much or thought it would be funny, or thinking that "well the player will just have to be aware of that". Well, it's not funny or cool for some people, so for my future games, I'll try not to make things appear under UI elements...
Route carefully so that you're always headed back to the matriarch with the maxed amount of food held. Use the lunge to cut corners and save time. Try to parse each "wave" of food spawned to get the ideal route, that's really the name of the game.
With the events, you want to get rid of the bad ones, and sustain the good ones for as long as possible. There's an event that doubles the food you get from collecting and one that doubles your capacity. Use the powers to extend these events (ideally the first one mentioned) and get rid of the non-desirable ones. You can foresee the upcoming events, and (hopefully) the description given should adequately describe what is going to happen. Your power/stamina are there for you to use and abuse as much as possible.
You can do it! You can also watch the full playthrough video linked to see how I handled it.
Three, for each kind of medal there is. So, if you have minimum all bronze on levels, you'll get the first ending, minimum silver the second, and if you have all golds you'll get the best ending.
The WASD change was last-minute so I didn't have time to update the poster.
Emscripten games do work on mobile, the issue is that I'd need to also program a way to redirect snakes/move on mobile. The source code is right there if you'd like to take a shot at it.
