Imagine being a homeless guy who's abducted by aliens, loses his ability to let out mysterious fluids from his body due to the aliens having drained those from you and having them make clones which look exactly like you and can use all of your god-like abilities. Only the Hobo games can do that.
This one was a unique take on the series, instead of adding new moves and enemies, you focused on Hobo being weak at first with no proper moves and as he went further he regained all the moves he had up to the fourth part of the series, while fighting clones which have the exact same moves as him. Oh, also, laser beams. Laser beams.
Now, I'm afraid to move onto the final two parts of the series, since I know for a fact that the sixth game is a HELL of a game with a high difficulty level and the last one will have me pray to the HEAVENS and hope that God will grant me the strength to... umm... beat him ? 0_o