Combat In Trouble In Paradise:
Even though the game will mostly be a Mystery, Horror, Comedy, Action, and Romance game. T.I.P will contain combat (Mostly used in boss fights) this combat will be similar to Dead Island 2's combat tho very toned down and more advanced, As for the atomic heart segment of combat it will mostly translate to weapon combat (Guns).
Combat In SMG4 Around The Clock:
Combat in S.A.T.C. will likely be the most advanced as you will play as multi-level beings (Solver Drones, Deities, Humans, ETC), for instance, a major protagonist in S.A.T.C will have the power of Solver and will be able to use it to move Objects or Drones (Very Similar to Atomic Heart).
Gore?:
There will be gore in some ways (Mostly Dead, Torn Apart Drones, & Solver Flesh), but it will make fighting very realistic dealing damage to Drones/ People will slow them.
Weapon Customization:
In T.I.P & S.A.T.C, you would be able to customize your weapons and wear. for instance, if you have a normal Fire Axe you can use nearby scrap metal and add a Sharp Edge to the end of the Axe. This will not only increase main hit damage but will make Killing/ Wounding an enemy go faster.