Just bought this game and I cannot figure out what to click to shoot my gun, or whatever weapon I have (nowhere does it say this in game).

I completed the game in story mode, but there a handful of achievements that didn’t unlock, even when I go back and replay the days: Alien Mama - Defeat First Boss Savior of 40 Days - Play Until The 40th Day Real Savior - Play Until The 49th Day Psychopath - Defeat Psychopath When I replayed day 5 on impossible and defeated the boss, this achievement still did not unlock either: Mission Impossible - Complete 5 day in Impossible Difficulty I...

When trying to open the controls settings, I ned to click somewhat to the left of th'e word conrols, i's a small hidden box seemingly. Then, when finally into those setitngs, the only thing that can be changed is the mouse seensitivity and the -y axis direction. so when i start the game (on normal) I end up without weapons or without knowing what to do ... i get haunted by things i should but can't kill, and i see boxes with ammo i cannot open cuz i don''t know what the keys are bound to...

I bought the health and armor potions from the vending machine, but they didn't change my stats. How do you drink them? I tried pressing all keys and couldn't get it to work.

Can you invert the mouse Y-axes in the game settings (or config files)?