Ok made you 9 ice objects, they are all 'see through.'
Ice floor, elevated, that allows you to walk above your map tiles.
Ice pillar. It has a flat top so place it somewhere it can reach the roof.
There are three corners, two variants for the floor and one flipped so that you can attach it to a roof corner quicker.
Ice spikes. They arent dangerous.
And as a bonus... One icesword made by myself, something unique for your game, as it wont be in mine.