Demo: additional boss behaviours, new upgrade nodes, loadout additions — Zero Sum Steam update #22839

Summation Serpent head now charges the player when no more segments are to be clearedcan be stunned by clearing the number that breaks off the serpentFactorial Factory now spawns smaller and much slower factorials on the last two phasesAdded two more upgrades to basic division (start with /5 and start with /10)"Start with"-values can now be adjusted in the loadout if unlocked via upgradesMap selection boxes now show the highest achieved grade