Endurance mode
Both endurance modes have 25 waves of enemies.
Destroying helicopters
If you get something to throw, pick it up then jump on the roof. Jump while on the roof. If done correctly, you can blow up the helicopters.
Do a Super Sonic Clap while in a rage. Point in the general direction of the helicopter, do the attack, and it will explode. Note: This will not work if the helicopter is directly above you.
Defeating soldiers with their shields up
When you are in rage mode and encounter soldiers in their shields, do Hulk's Earthquake attack. Their shields will fall and you can take them out.
Waving soldier
In challenge mode, go to time attack mode 1. Wait until the soldiers appear. Go to either side of the building. Pick up a soldier, jump, and throw him off the building. Sometimes another soldier will wave good-bye to him.
Soldiers and Alphas
Unless you are Super Hulk, Alphas can withstand a full powered gamma blast, but soldiers cannot. You can tell them apart by the color of their uniforms.
Return of Half-Life and Madman
After you defeat Ravage and passed the Gamma Elites, you will reach a "door". Two old Bosses will return for revenge (Madman and Half-Life). Deplete half of one of their meters. Madman will escape, will return in the last level. This time,
take down Half-Life. Use the Air Gamma trick. This time he stays defeated.
Destroying missiles
Perform any kind of punch toward a missile when it is flying at you. If timed correctly, you can punch the missile and it will fly back to the soldier who shot it then blow him up.
Gray Hulk: Additional comments
After you unlock the Gray Hulk, he will say things such as "And you think your car stereo is loud" and other comments.
Defeating super robots
The super-robots are the steel-made hide-weaponry guards inside the Desert Base. To defeat them, get them to clump together. Then, jump over the pack of them and run in a circle around them. They will use their energy-beam attack, but
as you run it will hit more robots, damaging or destroying them all.
Betrayal: Falling soldier
Grab a soldier and jump off the building where green arrows are pointing. As you land on another building, the man will disappear from your hands and you will hear him screaming.
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