So here is my 100% test.
Categorized by "illogical"
-the punching sound effects when nothing is hit
-enemies not affected by cactus though they clearly hit it
-Rob's health going to -5. Zero should be sufficient
-landing next to the long-barrel shooter or standing right near him does no damage to Rob, the enemy does not punch. His gun barrel is too long so he shoots next to Rob.
-barrel falling on to enemy's head does no damage to him
-shooting is only in the direction you face. The player does not automatically turn around if you are shooting at the enemy but not facing it. However, the enemy with the 2 guns can actually run in the opposite direction and shoot backwards at you.
-falling from high platforms does no damage
-Each time you run past a ladder, although you might not want to descend it, the sprite changes to the one that will descend it, and slows the player down in his movement across a platform
-Level 6. If you go past the spikes on the moving platforms and you descend over by the barbershop, you have the possibility to reach the spikes by foot without jumping into them. It's a bit illogical that you'd get instant death just by walking into them and not falling onto them. In this case the spikes would be compared to a knife cut.
Category "Glitch"
-In level 4 after you open the 1st entrance and you make that enemy run after you down the hill, he gets stuck halfway through. If you approach him while stuck he does cut you but otherwise he attempts to move left and right whilst being frozen to a fixed point. (See image 3)
-in Level 4 after you pass those 4 trampolines, there is a barrel you can push all the way till it falls below the ladder. At that point when I punched it, the sprite automatically switched to the one with the dynamite and the barrel exploded and killed the player.
-In level 4 after you travel with the 1st moving platforms and then you jump on the steps, there is a guy with a gun waiting for you at the end of those but he doesn't shoot. Normally in other levels that same enemy would shoot the moment you saw him, not this time, the enemy simply stood there with the gun pointing at you but not shooting. Only if you reach the 2nd step distance to him, does he shoot. On the other hand you can shoot him and he'll do nothing.
-At one point I had 1 enemy stand over the other and a barrel was next to the lower enemy. But the top enemy would not approach towards me by walking over the barrel. (See image 1). Only if I went there to punch him did he realize he can walk on the barrel towards me.
Category "Silliness"
-the farting when he grapples the ladder....it's just silly. I noticed the camera moves slightly while he does it. What's the point of that? Why would you make the player fart? It's not a good joke for everyone. The only reason I'd see is so that you know he is on a ladder when ladders are underground and you don't see them. But otherwise you could very well change that sound.