I find this game to be incredibly unforgiving.
Every step I make makes the geiger counter go up. I get that. But my problem is that almost every potassium canister is set an exact number of steps away and if I make one slight deviation, I'll never make it in enough steps. I have to be PERFECT. It's hard to be perfect when I have no idea of where to go and switches used to open the doors sometimes take two presses to open properly and that ends up wasting precious steps. The upshot is that every time I make one mistake, I may as well just reload right on the spot and more than once, I die when I'm literally two steps away from another Potassium canister.
It's a shame, because the artwork is great and the overall mood being set is FANTASTIC. If you're going to work on this (and you should because it's an awesome idea), make the increasing radiation meter time/duration-based instead of step-based imo and make it a separate gameplay entity from the geiger counter (i.e. the player absorbs radiation and that will slowly trickle away at their health at a fixed rate, that overall rate of damaging radiation increases when the player goes into areas that set off their ticking geiger counter and stays at that new faster rate even when they retreat).