Levitation is the most important sigil, that is the truth and do not let anybody tell you otherwise.
But yeah, this factual statement aside, I had a lot of fun with this game. Dodging the guard towers, trashing some Dwarf factories, all good stuff. The procgen part of it felt very cohesive, like if I hadn't seen the Island is loading screen and you had told me these were pre-designed levels I would have believed it, great job on the generation algorithm there! I thought the terrain worked pretty well into the gameplay as well, e.g. finding space for sigils in mountaineous regions and making your way towards dwarf factories was a good challenge I think.
Graphics worked well with the 64x64 limitation, making it feel like a large island worked out pretty well, I would say. Music worked well too with the ruins and mysticism angle the game was going for. All in all fun game!