The lights are on
Throughout the game you will pick up soldiers souls and other souls crystals that will be stored in your inventory. DO NOT USE THESE! wait to use these when u get them, especially if you die and lose souls a lot! you can hold onto these when you need to repair equipment, or realize you need that extra boost to get your level when ur short just a few souls. I have realized that holding onto these things make repairing so much easier, especially if you have just died twice after going into a heavily attacking area(ie 2-2 with all those lizardmen with pickaxes those things hurt) going back to nexus use maybe 2 unnamed soldiers souls and u have 400 souls easy, so be frugal with your soul crystals, and keep them for rainy day repairs and soul boost for leveling!