Because of the thickness and strength of the Hulk's skin, it's nearly impossible for any form of artillery to hurt him. Sure, everyone's seen bullets bounce off of the Hulk, but when we say he's bulletproof what we really mean is he's BULLETPROOF.
The Hulk's skin is nearly impenetrable and his lung capacity allows for long periods of submersion in water, exposure to many forms of gases, and even to temporary survival in the airless vacuum of outer space.
Adamantium is one of the few metals that can pierce Hulk's skin. Normal bullets merely impact against his skin like a 9mm round against an inch of steel plating.
The Hulk's skin is impervious to conventional blades, Adamantium and Vibranium being strictly the few known metals that can effectively pierce and penetrate his skin.
However, with that said, there are two bladed weapons that can cut into Hulk's skin. Adamantium is something that can cause damage to Hulk. Wolverine's claws have cut Hulk before, proving that this is possible.
His adamantium claws are one of the few weapons in the Marvel Universe that can consistently pierce Hulk's skin and Wolverine has no problem going for Hulk's head. In fact, if it came down to it, Wolverine could cut Hulk's head off, ending the Hulk once and for all.
BULLETPROOF. Remember in The Avengers when Bruce Banner said “I put a bullet in my mouth… and the other guy spit it out?” Yeah, it turns out he wasn't exaggerating, bullets can't stop the Hulk in the same way they can hurt Captain America, Thor, Hawkeye, Black Widow, or any other number of superheroes.
Due to the gamma radiation that birthed him, his skin is nearly indestructible and takes massive force to break. Throughout Hulk's many on-screen fights, he has only bled twice, and both circumstances prove it takes a unique set of variables to accomplish that.
There's no question the Hulk is a near-indestructible force who comes out on top in almost all of his battles of pure strength. However, against Superman, he's outmatched. While Hulk's strength might rival that of the Man of Steel, Superman's other abilities give him a considerable edge against his opponent.
Yes, The Hulk can survive a nuclear blast at ground zero. In fact, nuke & gamma bombs and the like are used against him quite often. Here are few times the hulk has had massive explosions used against him. From his early days of comics to his more recent events.
While the Hulk may experience moments where he appears to reach Superman's power levels, it's practically a given that the Man of Steel has even more limitless strength and is just holding back.
Vibranium can also cut the Hulk due to the same reasoning as Adamantium -- they are two of the strongest metals in the world. The one thing to note is that when Hulk gets angrier, his skin becomes more durable and can then withstand even these metals.
Despite his immense power, the Hulk has been defeated by heroes like Wolverine, Iron Man, Puck, and the Punisher. Spider-Man, Fantastic Four, and the Thing have also managed to take down the Hulk using their intelligence, teamwork, and unique abilities.
Hulk goes up against Thanos in a fight but is defeated by the Mad Titan. Though it ultimately wasn't surprising that Thanos would beat Hulk, it was shocking to see the easy fashion that he did it in. It could even be assumed that Thanos used the Power Stone that he had.
Traditionally, adamantium has been able to stand up against the brute, making the X-Men's Wolverine one of the Green Goliath's most formidable threats. The feral mutant initially debuted as an adversary to the monster in Incredible Hulk #181 (by Len Wein, Herb Trimpe and Jack Abel).
According to the Watcher, the reason for the Hulk's rage is the fact Bruce Banner's persona lies buried within him, desperate to communicate, eager to escape, yet forever imprisoned.
It seems to be that Bruce is stronger when it comes to sheer brute strength (unsurprising, given Smart Hulk's size), but She-Hulk overshadows Bruce with enhanced physical agility.
While Bruce is working at a bottling facility for some drink he gets cut and some of his blood goes into one of the drinks. The poor man who consume the drink is none other than Stan Lee, who has an incident.
However, by forcing Hulk to push himself to resist his power and even stripping off his skin in their fight, Cyclops revealed that his maximum power is something to behold - and may even be able to fell the Hulk in his classic, less overpowered, 'Savage Hulk' form.
Cyclops' brother, Havok, is one of the few Marvel superheroes who can defeat the Hulk in a fair fight. Alex Summers aka Havok may not be as popular as his more famous brother, but he is easily one of the most powerful mutants in the Marvel Universe.
In that limited series (titled Ultimate Wolverine vs Hulk), the Hulk rips Wolverine in half. While epically gruesome, this scene caused some discord within the fandom, since many fans argued that Wolverine's adamantium skeleton should have prevented that from happening.
