Thanks for playing! and thank you for the feedback, the curses did indeed turn out a bit unbalanced, i couldn't balance everything in time because 90% of my time was spent building the systems rather than creating content or balancing it. our goal for this game was to not just present something for the jam, but also to prepare a solid foundation that we could keep building upon in the future. as it tends to happen with ambitious ideas (at least mine anyway), i ran out of time to build everything for the jam, so it turned out a lot less polished than i would have prefered.
The cyclops room that you died at is the previous to last, and it's actually the one that unlocks the mage. and yes, the mage is indeed playable in the jam version, it's just a bit hard to get there i guess.
Regarding diagonal attacks, it's something that i planned to add through different weapons and abilities, but unfortunately it didn't make it to the jam, but afaik monsters don't have any MELEE abilities that can attack diagonally, iirc it's only ranged attacks that can do that (but feel free to correct me if i'm wrong, i completely rushed through their design, so i could have missed something from previous iterations)
In case you're interested, my future goals for the project are to prepare a much bigger version that has a lot more abilities, classes and enemies, featuring a progression system that feels closer to something like stoneshard (which i'm a big fan of)