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