This is freaking incredible! I lost count how many hours I have been playing but I still have yet to unlock everything! I unlocked same characters, SOR1 and SOR2 versions of characters, Stage Select, and just today I managed to finally explored all stages/scenes! There are so many of them and some of them are linked to other stages! The entire game design is beyond brilliant! The partner a.i. is also great, I always choose Aggressive a.i. mode for them and they kick serious butt!
Characters I unlocked so far are Rudra (ninja that is really awesome), Shiva (even his SOR2 version is selectable!), Mr. X (whoa!) and Elle (whip girl that looks like Electra but has a whip for an arm, very awesome and amazing moves, just try her dash attack while holding a knife or sword! and check out the Police button special attack too! Rudra's is fire magic, Elle's is explosive lightning!). Based on the shadows and other players hints, I can guess the other hidden characters are Roo (the hidden kangaroo from SOR3), Ash, and um... not sure.
Anyways it's also amazing how they even given the unlockable characters their own special Boss ending (which is triggered like in SOR1, before entering the final room, you must have player 2 already active.
After beating Yasha and Onihime, then entering the room, one player must accept Mr.X's invitation to join him,
and the other player must refuse to start a 1 on 1 battle between both players (as far as I know this can't be done with CPU partner because first time I tried it, they choose the same choice you choose.)
After the player that chose Yes beats the other player (you only need to drain their bar once, extra credits don't count.), Mr. X is amazed and invites you to join him. Choose No this time and the final battle begins. After beating him, you become the boss of the syndicate (like in SOR1's alternate result.)
In this Remake, it appears that every single character has their own special art and laughter animation during the credits cutscene.
It's really really awesome. Even the classic characters are completely redrawn and great artwork!
There are millions of great things to say about this remake. Even the finer details like adding special win poses for every single character after beating the stage 8 boss. Words can't describe how much of a masterpiece and loads of explosive fun this really is!!!!!!!!

One of my favorite alternate routes is in the bar of SOR2's stage 1. There, instead of moving further in the bar, you can go to the 2nd floor, which is on fire, and from there, you can jump from rooftop to rooftop, fight on top of a train, fight inside the train, and then fight in the subway!!!!! There are so many great original locations included, I liked the waterfall and other areas too! It feels like a connected city! Maybe this should've been called Streets of Rage World!
