This was a really cool concept, and you did a good job at making it really tense! I'm a pretty fast typer, but this was still challenging for me (in a good way)! Using ASCII art as the graphics looked really neat and fit the theme of the game well. You did a great job at making everything feel polished, especially for a game jam game.
One little thing that annoyed me was that I couldn't stay in full screen in the web version because I had to press esc to exit terminals, which also exits full screen in browsers. If you made it so that you could also press another key like tab or something to exit terminals (at least in the web version), that would fix it.