Hi guys! I wanna just let you know that Freedom Fighter is now in his Megarom phase. Yep, 128Kbytes available for the game 
Each level will have a 16KB page for data. In all the videos I posted till now the map is cyclically repeated and fills about 8KB of RAM. But in ROM it is compressed in 2.7KB. As you'll see at the start of second level (there is a level2 write scrolling down) there is a moment when scrolling stops for a while. This happen because the map unpacking in RAM in realtime (you won't see this in the game, at the end of each level there will be a boss and a score/congratulation screen before next level, so...). But after the midlevel boss I can, for example, stop the scrolling and unpack a totally different map for second half of the level. The tileset wich I use to scroll the map is only 992 bytes long (yeah, really). Actually all level data are 9.2 KBytes long. I have to add musics (one for each level?) and end level boss tiles and patterns. IF I'll have some spare space... I think I can add one or more 992 tileset blocks for more graphic's variety. A wisely map design allow me to choice from different sets: grass/water, grass/sand and so on, so in each set i can have 2 grass types, grass borders near water (they are already there, but i can't use cause I forgot to draw a junction tile from start/border middle/border). More graphic details. Welcome in my brainstorming LoL
Don't forget to set video on 720p50 to avoid frame missing
Testing arkos tracker player implementation in my code. I found this song ready as is in a arkos tracker's folder so it will not be in the game, sorry 
I just needed to try and see how the AKG player (generic version) works with my code (it is called avery interrupt in the ISR and I already have my sprites management routine in the ISR). Now I feel more confident about it (but I have to try sound fx support too, before singing my victory song...)
IF I'll have some spare space...
Why don't you make it 256K so you'd have more space 
yep I will entering MSXDev'20 and so I'll provide a ROM to add to file-hunter.com
Speed increasement for endboss isn't scheduled yet, because it's a combination of sprites and tiles (midlevel boss is only-sprite object) and so it is managed differently. But never say never...
Very very nice!