People who come into your SSDs only to leave after (or during) the first wave are the fucking worst. At that point you're invested in seeing things through and you're left without any help.
Oh well, got Twine Peaks SSD4 done. Alone again because as much as I whine about this, I'm too lazy to go looking for people to help me. :P The last wave was pretty brutal due to all the big brutes just wrecking the walls around the shield but luckily my trap tunnel otherwise was so golden that regular enemies didn't have a chance getting through.
With SSD4 done, I unlocked 5* things. I'm not excited about the prospect of having to level up everything to 5*. Not only have I started being short on PDORs, now I need to farm Lightning in a Bottles as well. -_- They really need to rethink the evolution material system. Unless a mission gives 4x evolution mats, the amounts of materials are too small, and to make things worse, they are rewarded in too few missions. Like, yesterday there was a grand total of TWO Twine Peaks missions (unlocked for me) that gave Pure Drops of Rain. One gave a one-time batch of 72 of them and the other probably a little less (it was a higher level quest but it was repeatable and only had one PDOR icon). This is also a problem because they only ever seem to give PDORs for 4-player missions that require a ton of materials & a good full team to see through (or even more materials if you have a bad/not full team). Made even worse that the balancing seems to be a bit off. I'm almost at Power Level 98 with fully upgraded weapons, traps, good offensive squads and a pretty decent amount of research spent on the offensive, and I still feel pretty weak against enemies in 82 level quests. You just have to spend thousands of building materials and 100-200 trap crafting materials if you want to have anywhere near an adequate protection against the huge masses of resistent enemies.
I feel like every mission on Twine Peaks' should give something like 15-20 pure drops of rain, 10 lightnings in a bottle, 5 Eyes of the storms and a couple of storm shards, in addition to the extra rewards & "4x evo mats" rewards that occasionally pop up. Or reward those to people who do & assist with storm shields or do Play With Others missions, to encourage people to do those things. As it is, this is starting to feel too little for too much grinding, when you have to do four missions that can take 20+ minutes to get through to level up one survivor.
Anyhoo, as some kind of milestone in this game, I now have a mythic lead survivor for every survivor squad, though I'm currently only slotting one for 6/8 squads because I don't have a lot of the types of regular survivors that they require. Like, at one point I had FOUR Cooperative squads, three of them mythic. -_- Luckily the one non-mythic one I got a mythic lead survivor for that wasn't cooperative, lol. But I've still got one squad (Training Team) that is nothing but purple cooperatives, so I'm delaying slotting the mythic lead survivor for Think Thank that is also cooperative. Oh well, ss a stroke of luck, the last mythic I got for Close Assault Squad yesterday was the same Adventurous type that my previous legendary lead survivor & squad were, which I had Adventurous legendary survivors for all but 1 or 2 spots. Now I just need, like, 15 cooperative legendary survivors and 7 or 8 curious ones and some singular other types to fill all spots with legendaries.