Thanks for having a go and the feedback.
The light shards had colliders on them to deal some damage, this is my fault I set this up before going away and don't think I mentioned it on Trello :/
Same the doors I animated them and added a smoke effect for the enemy's to enter but alas this was lost somewhere on Trello, Some of these issues we will fix in a V2.
As mentioned we did talk about health, or how to end the level but unfortunately we ran out time.