Really liked this take on typing games, I feel like knowing which upgrades to get is a big part of winning! I think I got to around wave 7 before I lost, gets really intense after a while!
I missed that you activate abilities by clicking on them - I feel like maybe an improvement there could be letting you type out the name of the ability itself so you don't need to move your hands off the keyboard. Also being the weirdo I am I found myself trying to hit the up key like in an actual terminal to repeat words I'd entered before for that one ability that has a chance of copying a cleared word onto another enemy.
Overall really good presentation! I'll need to try and learn how you did the custom stuff around the edge of the actual game like the title and matrix pattern, really helps the game feel more polished.