"Snake Pit" now has a Speedrun Mode, which you automatically switch to when you have completed all Level. The best Time is also saved and an Achievement is linked to it.
Feel free to try it out.
Speedrun Mode
Source: Steam Community (opens in a new tab)
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 7848532 · public branch
Steam updated · First observed