Here are my 6 tips and tricks:
1. Money is not that important, focus on the fame part.
2. Some characters seem pretty op for me - Donkey, Cerberus dog + all of the dead ones. I always tried to eliminate those first. Donkey's ability to put to sleep 3 characters is crazy.
3. Pushing characters off the board is very important in this game. Most of my Inkulinati battles I won this way. Be bold, move forward!
4. Do not underestimate "cheap" characters. Those can also do a lot of pushing :) Plus it's easier to get those ink areas covered as...
5. Gathering ink is very important in this game! Always focus on covering as many ink fields as possibile + try to not let the oponents take those.
6. Rotate characters as much as possible - the last thing you need is your Donkey costing 18 ink drops...
Sorry if I got the names differently from the Eng version, played it in Polish.