Thank you for playing. Yes, we decided to pick engine that we were completely unfamiliar with for the jam and it was indeed Unreal. Health bars was funny bug that we didn't have time to fix - it indeed is a strange thing!
I am not our programer, maybe he will answer much better for technical portion later, but dithering was applied mainly so sprites and everything else wouldn't stand out from eachother. Basically without grain on everything it looked so much different that it was a bit unpleasant for an eye. With couple of tricks we managed to make it feel more in line with eachother.
Was my mistake with combat being that way. Went to turn-based tactical route, completely forgetting how usual dungeon crawlers are played... and that lead to huge spike in dificulty to understand how it supposed to be played at the end... we had to make some sort of tutorial for combat for sure. Telegraphs on ground should've been also explained. With Cyberspace its kind of the same. Its a mix of us not making 'teleport back' feature in time and puzzle mechanic being not clear (when you start second door you appear at the same place you ended on so you have to walk back... safe runes are removed from the ground so path is visible, but, looks like, people think new rune is a safe one and die horribly there). We wanted also to make checkpoints, but run out of time...
When you say about free look you mean looking around to check combat situation? We did it so turning is not an action and you can turn in combat without fear of getting hit... but again - never explained that in game! Time being rough on us with lack of experience with jams and such... we also went hardcore aka never prepared anything beforehand haha!
Foliage was supposed to be halftransparent when you enter it, but... yeh >_< never finished it. By design you were supposed to be safe there from monsters, but we couldn't implement it and monster visions fully so it now mostly a decoration.
And terribly sorry about card art being hard to see... we hoped that both cards and doors have good-enough visibility, but never actually checked with color palete table for different colorblindness :( Thanks for mentioning it - it is something to think about for a future fix for sure.
Thank you again for playing! And such detailed feedback - it will help us a lot to make everything better postjam and also improve future jam's checklists!