Although it is not stated clearly in the book on what Nico's plan to defeat Kronos is, there is a few hints if you 'read between the lines'. Nico's plan is understood to be that Percy would bathe in the River Styx and then kill Kronos at the time he was weakest.
As in stated in The Last Olympian right before Percy was about to bathe in the River Styx:
"'Percy,' Nico said, 'Mabey he's right.'
'This was your idea.' [Percy]" (Riordan 134)
Or:
"I struggled to my feet. I moved toward him with the knife. I should kill him. That was the plan." (Riordan 336)
These are both quotes from Rick Riordan's Percy Jackson and the Olympians: The Last Olympian. Although it is not clearly stated what the plan was in the book, you can obviously see that the plan was to bathe in the River Styx and defeat Kronos.
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No one knows what beyblade is the best but I'd probably say scythe Kronos is my pick! :D
He convinces Hades to help fight in the War.
Percy swims in the Rver Styx in the book Percy Jackson & the Olympians: The Last Olympian by Rick riordan.
The dreadful and feared monster is the sweet little cow fish, Bessie, or the Ophiotaurus. The myth is that if you kill him and sacrifice his entrails, it will release a power strong enough to bring down the twelve Olympian gods.
Well you can always say he was loyal to the gods by not joining Kronos