Eta and Alpha? Thanks in advance!

i read that you unlock through the don's exit. i got a cut scene of an escalator but no achievement?

I just finished the game with all achivements. (All endings and all anomalies) Ask if you need help!

my first almost successful run i just died in the train, this gave me one ending achievement, then, when back on the main menu, i saw a character just run and jump down on the tracks and wait for the train to ram him, then got another achievement, now i'm stuck at platform 0 as there's no more anomalies and so can't progress, also there's one anomaly i can't find for the life of me!...

hi, so, finally my previous problem solved by itself, the thing is, now, i'm trying to get ending Zeta but all i get is this weird ratio where its either the demon priest ending, mirror or gate, or the death in the subway car ending, in a ratio of 50/50 between those two.. do i need to do something specific for that ending or is the ending super rare?? because i've played for around one hour, maybe two or even three, of runs and its always just between these two types of ending....