There are currently two known launch parameters (aka launch options) that ΔV currently recognizes.
--enable-mods
This option enables the modloader, which allows the game to run mods whilst disabling achievements and the leaderboard while it is enabled. Check the introduction to modding page to read more
--debug-console
This option enables a select few tools intended to be used for testing the game's development. It adds several debug features, and moves the default functionality of the ` key to the F11 key.
--screensaver
This removes all menu screens, and shows purely the main menu background animations for a neat screensaver. Pressing any key causes the game to exit
--accumulate-input
This is a workaround for high-polling mice causing lag spikes in the game. Page links to the troubleshooting guide for more info.