Moving right along to the end of ACT II - the bleakest of the bleak or where we go from the frying pan into the fire.
The four signposts and their events to be explored are:
OS - HOW THINGS ARE CHANGING
Worth
Confidence - Worry
Value
MC - PLAYING A ROLE
Approach
Self-interest - Morality
Attitude
IC - OBTAINING
Fact
Security - Threat
Fantasy
RS - IMPULSIVE RESPONSES
Permission
Need - Expediency
Deficiency
As I looked at this, I did so knowing once again I wanted to start with the climax (ending) of the sequence(s) based on what I had in my head.
Both the MC and IC signposts looked like they would fit nicely toward the climax, but could I find a way to weave them together to make sense again?
This is what I came up with:
Fact (IC)
Approach (MC)
Security (IC)
Self-interest (MC)
Threat (IC)
Morality (MC)
Fantasy (IC)
Attitude (MC)
Using the definitions again (along with some story points to make it a bit more coherent), this is how it turned out:
Encountering X, the IC believes other survivors must exist (fact). This causes the MC to temporary change his preferred method of problem solving (approach) as he now must use discretion when shooting as he doesn’t have enough ammo and doesn’t want to use it on a survivor by accident.
Soon outnumbered by X (security) and facing certain doom, the MC contemplates using his last bullet on himself (self interest). But just then - as the IC believed - a band of survivors saves them, but quickly pose a new problem to the IC’s vulnerability (threat) of being infected, their savors quickly proven to be their captors.
This forces the MC to do what’s best for others (morality), going from guardian to playing the role of prisoner. Due to the vulnerability issue, he coerces the IC to avoid detection by playing dead amongst the corpses. The IC tells him she will wait there for him to escape (fantasy), knowing she can’t afford to as the clock ticks. This causes the MC to completely surrender to the role of prisoner (attitude) as it’s the only way to ensure both their survival… for the moment.
This brings me to the end of Act II, the remaining characters facing their grimmest challenge yet. The IC has a journey to complete before her infection completely kills her; she’s on her own with no more options for delaying the timelock left and the person providing for her safety - the MC (along with the remaining survivors) - have been captured.
Mission impossible just got all the more so… but not with Dramatica! 
Now I’ve got to figure out the two preceding sequences. Piece of cake, right?