This is the famous NES games revisited on PC Engine system. A lots of change, yet it will feel very familliar too.
First the graphics engine was totaly changed, it seem to be the precedent of Super Double Dragon on SNES, having fairly similar bigger sprites.
The music are like all PCE CD games a complete instrumental soundtrack, the game also feature manga in between stages (skipped in this TAS)
For the rest, the control of bimmy and jimmy are intact, noticable change would be that the flying knee doesnt anymore toss you over the whole screen (and doesnt do anymore that wicked sfx sadly), double flying knee doesnt work either
I founded only 1 handy glitch (pretty crazy one tought), in stage4, i do pickup a grenade apparently at the exact moment the game doesnt like, as a result, the next ennemy spawn at the grenade location, bimmy is then litteraly having a ennemy in his hand, the idea is that trought this i can kill him faster than if he would have spawn in his original location, by killing bimmy... since in that case they both die in the process (that was messy to explain!)
A hacky LUA is available
here, it does a bunch of stuff, this revision does count all kills up to stage5, so it can be used to watch until that point, yet, the hitbox are bad and not always working, i have more refined version for hitbox but it only work in stage1, i will try to fix it as much as i can but due to the hacky conception of this script, i might fail at it
Ill complete this text soon oho, a lot more to say
Thanks to Aktan for encodes, adelikat and paul_t for help with strategy, ram search, and many other stuffs :p