We're good to go! I've let the first batch of participants in, you should now be seeing it in your library.

Instructions for unlocking Rampage! mode
Look for the shotgun spawn in the main game mode--it'll spawn by the skeleton dude next to the campfire. Note: it’s not a guaranteed spawn and there’s only one per run, so it might take a few tries. Once found, Rampage! mode should be available in the main menu.

In Rampage! mode you spawn with a fully loaded shotgun, and the level generation logic has been altered to for a more action-oriented experience (fewer tunnels, more enemies, more ammo spawns, etc.).

I'll mainly be gathering feedback in the Cosmocat Discord (#toxicant channel), but I will check this thread occasionally as well as post critical information here.