If you're trying to get the "Lasting Legacy" badge, you have to play differently than you do on the lower difficulties. While a base risk of ~20% might seem like too much, any less would mean that you aren't using your survivors as much as you can. They're useless in the base, and every day you aren't out expanding is a day that the hordes increase in size and more undead surround your walls. Defensive buildings are your friends, as they free up survivors to go out and do things instead of defending the base. You'll also need to get a lab and start researching as soon as possible, preferably the ones that provide offensive/defensive bonuses, and maybe binoculars if you're worried about running out of survivors. Get as many survivors as you can, because you'll need every one to defend when hordes appear, so plan missions so that everybody's home when the horde arrives. Once you get past a certain size, it becomes massively easier, and you can just coast to the finish of your choice.
It seems like your crew member's individual max carry weight is capable of growing over time. I'm not sure if it speeds it up, but I've been loading them to max to watch their carry weight grow. It's slow, sometimes only a pistol bullet increase at a time, but it definitely increases with enough time.
What is the problem with your games and save files? It never fails, my save gets deleted when playing one of these. I just lost my save when I refreshed the page. Seriously, it's always been a problem.
Ahhhh, jmtb02, possibly the best programmer on Newgrounds and all of the net, I praise you for your success at plunging The Man In The Hat into yet another unique tower defense.
Bubblemasta made a complete guide that has everything about Amorphous+ Glitches how to find razor queen, how to get all awards, all rewards, full bestiary, gloople location, how to kill them, and strategies for difficult things like how to find queen and razor queen, get the 15 deaths, and how to survive 10 mins. in bounty run at http://www.amorphousguide.com/ If you have any questions, suggestions, or feedback, shout him. *THERE'S A CHAT BOX!* Keep this message alive
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