I had a few people run through it to test balance, however in all fairness, they were not trying to get through the whole list of games in the jam, so they had more time to spare for this. The game was balance tested a few times to keep it from progressing too fast, however I didn't consider game length for people who may not want to stick around for that long, which I'm now seeing quite a bit!
Thanks for the feedback, I will be taking this into account more for future game projects!