Currently this game is pretty inactive, which is sad, but I've noticed that annoyingly, a large amount of the current arcade challenges are missing.

If these could be added, that'd be great! Score challenges can be added as highest score if possible. It'd also be really nice to have the new challenges currently in the Duck Game Alpha, but if they can't be added (due to being in the alpha) then that's fine.

Score challenges have always been a difficult case; speedrun.com as a site isn't really meant for (nor does it really handle well) runs/challenges which are more high score focused than speed focused. Fortunately, there's been chatter about a potential for Landon to add time-challenge modes to existing score challenge levels; i.e. "how fast can you earn the Dev medal on Mace Face?" If this ends up implemented, it'd be easy and sweet to set up categories for the score levels, but as it stands, it's not really in the spirit of the leaderboard.

To your second point, the new challenges are planned to be added as soon as they're fully released.

Hi, I've seen in other games that what you do is count points in milliseconds, whoever has the most wins. So if you get 50 points, your score would be 0s 050ms. There aren't any speedruns that have been more than 60,000 (which would be 59s 999ms), so I think it would be possible. Do you know if they plan to add it at some point? If not, the other possibility you mentioned: "how fast can you earn the Dev medal on a N". Thanks

the "how fast can you earn the Dev medal" is implemented already in game with the speedrun mode option, i'm certain that after 5 years since this discussion began, that hosting high score leaderboards on this site will never happen

the game doesn't display the time it took to beat the medal so it's not really usable for us