"the combat feels very unforgiving". Thank You! That was exactly what I was going for.
You're right though.
A bit of feedback has given me a chance to reevaluate, and I agree it would be better if the throwing was cleaner and more predictable. Also giving some thought to a more set path for the slime enemies, which would allow the player to more easily avoid death by slime. If you fall into a sludge pit though, that's on you :P