I find highrise really good in 1v1, as even though the map is quite larger than Rust, there isn't really anywhere to hide without someone coming up behind you. There is no corners to back yourself into except the spawns, and because of the spawn layout u can get trapped if you camp at spawn.

Afghan I LOVE in team games, especially CFT. IMO though, the map doesn't flow so well in FFA. If have found a lot of players tend to gravitate towards the Marijuana patch and not much else happens in the rest of the 4/5th's of the map. Equals game where players run into Marijuana patch, get one kill, then die half second later. Rinse and repeat.