It's actually a really good game. It's a metroidvania style game, but with great humour thrown in and less of an emphasis on backtracking to find loot to progress and more of a focus on combat.
I would recommend it.
Though I would recommend looking up a guide to find all the ghost bits in each room. It's really cryptic to find them. You have to specific things in each room to make them appear. Some are easy like moving to a certain spot in ghost form or killing a certain robot or possessing a certain robot. Though some are really impossible to know without a guide like:
- Taking a particular possessed robot from a different room to a particular spot in this room
- Use an item from the item list in the pause menu (not the quick menu with the d-pad)
- Kill a particular robot with another particular robot you have possessed
- Move acertain number of a certain robot type to a particular spot in the room
- Kill all the nasty robots whilekeeping the harmless robots alive
- Move to a certain spot in robot form (sometimes only accessible by falling from another room)
etc etc
The game doesn't tell you which of these conditions (note well there are many more conditions to get the ghost bits to appear). Trial and error doesn't even begin to explain it. Just save yourself the frustration and use a guide.
It's not cheating as the items you get from this are not game breaking and the game bases it's difficulty (on medium and hard) based on the fact you have found ghost bits from as many rooms as you can.