A few typos here and there, and a number of issues with the UI (like not understanding how the minigames work, or knowing what a dialogue option would result in)... but all in all, the overall story was captivating.
Normally, I can see a plot coming a mile away, but the pacing and the development of Oathbreaker really had me too wrapped up in the story to even think about how Season 1 was going to end, making the reveal unexpected and delightful.
Hopefully, the next engine will allow you to spend a bit more time refining the user experience, and maybe if we're really lucky it'll be easy enough for you to use that you'll remaster Season 1 into a single, cohesive distributable as part of Season 2*.
As a side note, if you decide to go with Unity, feel free to drop me a message if you need any tips.
*edited for clarity