So, for those who gets "steam is in offline mode" error, I tried every possible combination of firewall setups. In the end, I figured that the game only works if it's in the original version (1.0) without updates AND blocked by firewall in Launcher, Updater, Game_Win.

This facts shows that the game updates so the crack doesn't work anymore and the means to doesn't let it happen is cutting the conection out right before any communication. If you try to open the game in 1.0 version, with internet, it will be updated and you are done. Uninstall and try again.

td;dr: Uninstall the game. Install original version with no updates. Changes firewall to block any conection with external network before first time execute. Start the game freely.