New game mode:

-Classic (long game with 11 floors per location, standard game experience)
-Short (fast game, no different from the latest versions of the game)
-Infinite (new, special game mode)
New features:
-Merchants can now be killed, but they can fight back
-Secret room
-PvP in co-op mode
-Daily races with a table of results
-Stamina - now attacks with most weapons spend stamina, if it runs out, you will not be able to attack. Recovers when you don't attack.
-Chargable weapons
System swing of the weapon to increase damage
-A few new caps
-New firearms (exclusive to Teresa)
-In-game console (opens only when a mod is enabled; you can't save tokens or open characters if the console is enabled)
-Curse system: sometimes, along with getting a level, you have to choose a curse that is the opposite
-Reworked ng+ system - you return to the game with your improvements and cap, but lose weapons (which you will not find) and active ability
Other changes:
-Change in the visual part of dynamite
-Some of the characters, weapons, enemies, and rooms were redrawn
-The Valkyrie character became the Teresa character
-Changing the visual part of the environment
The change in the balance:
-Removed a few boring weapons
-New Skelemancer attacks