I wanted to add some online co-op, but I wouldn't have the resources to fully animate the other player. Maybe some crazy "Your friend controls the enemies" sort of asymmetrical multiplayer mode? Maybe, maybe...
About the secret, you'll see how the bosses will work. Any kills, regardless of if they were your fault or not, count, though.
And thanks for the bug report, I'll look into it right away and have it patched in the next version (coming soon)!
I was thinking about local co-op, but the issue is the same. You could use that sword enemy as a place-holder art for the player and maybe add for example a green circle below, on the floor to identify the player from enemy, later maybe add direction sprites (look from the side, look from the back).
P.S. Ascend-hard-pacifist done! Now in progress descend-hard-pacifist. (invisi-ring plus map-ring is a great combo for pacifist. Also not having powerful kicks trait helps to move enemies away from doors.)
You: *breaking crate by pushing it into enemy or enemy into crate or simply loudly opening a crate, or kicking enemy across half of the map*
Enemy: This is fiiiine...
You: *opens one squeaky door or not oiled properly gate*
Enemy: You dare challenge me mortal!?
