Yes, although my mistake (or just time limit on the jam) made me tie a lot of potential outcomes to the dice rolls, so there's some RNG involved!
SPOILERS BELOW:
The four-helicopter ending happens only if Scott is motivated to do it. To avoid it, try not to compliment him and not bring him his mug.
There are two main endings with many potential folks living or dying: the helicopter ending and the jumping-from-the-window ending. You jump from the window if you fail to obtain any form for the last phone call, or if you obtain Phylis' outdated form and fail to convince them it's the "right" one. Both are tied to dice rolls on the way. In helicopter ending there are two ways (through motivated Scott or motivated Phylis) to save everyone, else it's up to your dice rolls, and you pick in the end who will survive. In window ending, only the motivated team members survive. :)