I thinking my run was bugged due to never being able to improve my hero (stuck at 190% and changing for other equipment doesn't change this value) and the success rate never dropping. Judging by the comments it looks like you just haven't gotten around to it. Unfinished games are normal for jams, but I would appreciate it if the description is clear about what is implemented and what is planned.
That said, the concept is very well executed (for as far as it has)! I think it would definitely be a fun game if you had to work out what equipment to loot each round.
edit: and I love the knight "fighting" sounds, it adds so much character.