Monster Hunter cheats and cheat codes for Playstation 2

Town of Hunters
Finish all quests.

Unlock Rathian Ecology
Defeat the offline 5-star mission "Slay the Rathian".

Item combinations: 
Antidote Herb + Blue Mushroom = Antidote
Antidote Herb + Huskberry = Antidote S
Armorskin + Pale Extract = Mega Armor Skin
Blue Mushroom + Godbug = Nutrients
Bomb Material + Dung = Dung Bomb
Bomb Material + Flashbug = Flashbomb
Bomb Material + Ivy = Smoke Bomb
Cactus Flower + Bitterbug = Herbal Medicine
Catalyst + Armor Seed = Armorskin
Catalyst + Power Seed = Demon Drug
Catalyst + Rare Steak = Power Juice
Cricket + Bugbopper = Arrowana Bait
Demondrug + Khezu Extract = Mega Demon Drug
Dung + Huskberry = Dung S
Earth Crystal + Bitterbug = Antiseptic Stone
Fire Fly + Snakebee Larva = Goldfish Bait
Fire Herb + Nitroshroom = Gunpowder
Fire Herb + Small Barrel = Sm. Barrel Bomb
Flute + Antiseptic Stone = Antidote Flute
Flute + Lifepowder = Healt Flute
Godbug + Wyvern Fang = Lifecrystals
Gunpowder + Lg. Barrel = Lg. Barrel Bomb
Gunpowder + Screamer = Sonic Bomb
Herb + Blue Mushroom = Potion
Herb + Huskberry = Recov S level 1
Honey + Bitterbug = Catalyst
Huskberry + Armor Seed = Armor S
Huskberry + Bomberry = Clust S level 1
Huskberry + Burst Arrowana = Crag S level 1
Huskberry + Diskstone = Disk S
Huskberry + Needleberry = Normal S level 2
Huskberry + Pin Tuna = Pierce S level 2
Huskberry + Power Seed = Demon S
Huskberry + Rumblefish = Normal S level 3
Huskberry + Scatternut = Pellet S level 1
Huskberry + Sleep Herb = Sleep S level 1
Huskberry + Velociprey Fang = Pierce S level 1
Huskberry + Wyvern Fang = Pellet S level 2
Kelbi Horn + Immunizer = Ancient Potion
Lg Bone Husk + Bomb Arrowana = Crag S level 3
Lg Bone Husk + Dragon Seed = Dragon S
Lg Bone Husk + Scatterfish = Clust S level 3
Lifecrystals + Wyvern Claw = Lifepowder
Mega Armorskin + Med Monster Bone = Armor Flute
Mega Demondrug + Med Monster Bone = Demon Flute
Mega Nutrients + Dragon Toadstool = Max Potion
Net + Trap Tool = Pitfall Trap
Nutrients + Honey = Mega Nutrients
Paintberry + Huskberry = Paint S
Potion + Honey = Mega Potion
Potion + Huskberry = Recov S level 2
Power Extract + Well-Done Steak = Mega Juice
Raw Meat + Sleep Herb = Drugged Meat
Raw Meat + Toadstool = Poisoned Meat
Raw Meat+ Stunshroom = Tainted Meat
Sap Plant + Paintberry = Paintball
Sap Plant + Stone = Bomb Material
Sm Bone Husk + Burst Arrowana = Crag S level 2
Sm Bone Husk + Genprey Fang = Stun S level 2
Sm Bone Husk + Loprey Fang = Poison S level 2
Sm Bone Husk + Pin Tuna = Pierce S level 3
Sm Bone Husk + Wyvern Claw = Clust S level 2
Sm Bone Husk + Wyvern Fang = Pellet S level 3
Sm Husk Bone + Sleepyfish = Sleep S level 2
Spiderweb + Ivy = Net
Stunshroom + Huskberry = Stun S level 1
Toadstool + Huskberry = Poison S level 1
Worm + Vembug = Tuna Bait