-Improved levels and redesigned enemy groups and bosses.
-Added lots of new enemies.
-Added a randomizer mode that randomizes enemies, weapons and dropped items.
-Improved gameplay.
-Improved animations.
-Added new fighting moves.
-Improved enemy AI.
-Rebalanced difficulty.
-Improved visuals.
-Fixed bugs.
-Added new vsync options and an exclusive full screen mode.
-Added new co-op mechanics (players can catch falling friends and throw each other safely).
-Added new gameplay mechanics (Daria's flips and breaking away from grapples).
-Optimized performance.
-Added new music tracks and remastered some of the old ones.