Thanks for playing our game, we really appreciate it. We spent the best part of a day creating the load/save feature and then didn't add in an auto-save-checkpoint feature, which would have been 5 minutes extra work. Sorry about this. There was a load/save bug where enemies that were killed still blocked their square on reload so if you are going to try again, maybe wait for our post-jam release which fixes this bug and adds some other features (and possibly bugs). To get all the way to the end and then die must have been so frustrating, we feel your pain. You were only about 10 squares from the end of the game!
Did you find any of the @Zooperdan trophies? There were 12 to collect... :)