This is a pretty interesting game idea - I like that there’s a dungeon crawler in the comp, and I love the idea of quick maths problems for parrying attacks.
I’ve found a bug that stops me from continuing early in the game. I tried to email it to the author, but the email bounced back. Hopefully they’ll see it if I copy it here! Putting in spoiler tags because it concerns a hidden object, but it’s very early in the game.
I found the safe in the foreman’s office. Trying to crack it open puts me into an encounter with nothing - the enemy name is blank. Attacking, successful parrying, and the jolt spell (and maybe other actions I didn’t check) all lead to an “encounter successful” screen with a red “continue” link that you can’t click on, meaning you can’t progress. Maybe the safe’s information isn’t being loaded correctly into the combat screen? This is in Google Chrome v. 69.0.3947.100, using the online version of A Final Grind on the IFComp website.
It’s kind of a shame to start a thread with a bug report, because the idea and the writing so far suggest that this is a good game. I’ll come back to this later in the judging period in case the author sees this and can fix the bug.