Here is the full list of all 13 Respawn Man achievements.
Die 1000 times.
Completed a level without dying. No corpses.
Fall from a high height into water while also dying of poison.
Fall onto the flag at termnial velocity with no lives to spare.
Publish your first level on the Steam Workshop.
Beat another player's Steam Workshop Level.
Beat the end boss with fewer than 6 of your corpses shambling about.
Complete the Dawn segment of the game.
Complete the Day segment of the game.
Reach the end Boss.
Why won't they stay down?
Her voyage couldn't even last 10 seconds.
Beat the postgame levels.