This game is actually very good, the graphics have a style similar to that of ´Dumb Ways To Die´ and is very consistent throughout the game. The mechanics are very good too, jumping and shooting in slow motion is very creative and gives a great magnitude to this game making it very enjoyable.
However, there are downsides
One which is already mentioned in the description is that is very short, consisting of only 5 levels.
the other downside I see is that there is almost nothing new to do in every level, or any new activity, except for the enemies which are new but the rest remains the same, jumping and shooting targets was the only activity.
Another downside I see is that it lacks options, like choosing the level option, or going back to the menu option where you started, or to mute the music at all, or even settings options, when I finished the game there was no option to restart the game it just stayed in the same screen and there was nothing I could do except refresh the page if I wanted to start over.
The dimensions of the game are unnecessarily big, like I do have to scroll up a bit or scroll down to see everything which is a bit uncomfortable.
Also collecting the O´s doesn´t do anything special when you liberate the Os out of the jail boxes, there is no difference if I go throughout the game without doing this