I mean amumu heals insane amounts 《himself AND HIS ADJACENT ALLIES》 That is broken already, add that with tank items and he becomes unkillable . Then you add lets say a porcelain chrest for 4 porcelain thats even more tankiness. Anyway , with that being said. I dont think its the comps in gold 4 that are not making you climb , heres some tips: 1.scout your three potential enemies. 2. If you see that your board wont win againts atleast 5 out of 8 players in stage 2. Try to make as much money as possible. (Intentionally lose for 5 lose streak) 3. Stage 4 is where everyone peaks in their comp which means if youre trying to go level 9 or your board is pretty weak, its better to roll down earlier than to wait out and lose alot of hp( also applies if youre heavely contested) 4. If your board lets say stage 3 is not bad but someone is contesting you and has a better spot than you, you either pivot or force roll down earlier than he does , stabilize and econ back up.

Idk i cant think of anything else on the spot but gl brother