What level should I be before facing Vilemaw?
Solution 1:
First of all Vilemaw is really very strong neutral monster (maybe nerf) who gets harder by every minute of game. General is harder than Dragon and weaker than Baron Nashor.
I will make a comparision by max health to understand
- Dragon: 3200 + (220 * highest champion level)
- Vilemaw: 5011 + 280 per player level + 150 per minute
- Baron Nashor: 9876 + 125 per minute
Dragon health don't scale per time. Vilemaw and Baron scales making them harder and harder to beat late in game.
Additionaly Vilemaw damage also scales in time. There aren't any other monster which do that. He have Dragon damage after ~17 minutes and Baron after ~43.
In concluson - treat it as a challenge like a Baron Nashor.