Update 1.37 (Difficulty Spike) will feature many changes related to game's difficulty.

• New second campaign, taking place at next 10 floors after Doctor, with 5 new enemies and 6 new bigger bosses! Take Red Crystal with yourself and face something of a greater evil deep below!
• Rework to refill stations, making them much less cheesy!
• Code optimizations to make saved data take less space!
• Buffs to underused items, such as shields.
• Misc art updates, done by AsperDev and Taiki.
• Difficulty options!