The April version is not necessary to speedrun but it contains a very important 2+ minute skip in hl_c13_a4 that was later patched out

It also includes less respawn areas, and a bunch of commands are renamed/different.

paste this into your browser steam://nav/console and enter the following download_depot 225840 225841 5797243525891650985 download_depot 225840 225842 3922144645504182148 and it'll download to steam I recommend keeping the public version and this april version separate by renaming one of the folders for example "Sven Co-op public" and "Sven Co-op" whichever is just called "Sven Co-op" is the one that steam will use when you click Play