I even heard that there's a code that gives you the Donovan suit with infinite Darkness and Caltrops.

Yep. I can't remember that code, but It's in an IGN video about Specter of Torment cheats. I was going to use it, but I think I want to get Donovan's armour without cheating.

Yeah, trust me, it's really rewarding and the cutscene is very somber. But I think it would be interesting trying to 100% SoT with ONLY Donovan and Caltrops. A Lifelocke, of sorts.

That sounds cool. You could add an extra layer of challenge by adding the rule that if you die once you have to restart the WHOLE game. On the basis that Donovan is a normal guy and isn't immortal like Specter Knight.

I'm actually really close to getting all the skulls. I thought it would take ages, but I found Scarlett (which was adorable) and the only ones I still need are in Mole Knight's stage.

Ahh, yes. There's one in Mole Knight's stage that is complete idiocy. You have to dash into a lantern then use the Hover Curio to get to a ledge which leads to a challenge room with the skull in it.

How many checkpoints in is it? I may or may not have that.

And is it a normal or bouncy lantern?

About 3 or 4 checkpoints in. Normal lantern. You almost definitely don't have that. It's above ground (meaning you can see the sky).

Thanks! One step closer to my boy Donovan.