Synonyms of tricky in English:

difficult, awkward, problematic, delicate, ticklish, sensitive, touchy, risky, uncertain, precarious, touch-and-go

thorny, knotty, involved, complex, complicated, convoluted

vexed

embarrassing

informal sticky, dicey, hairy

North American informal gnarly

cunning, crafty, wily, artful, guileful, devious, scheming, sly, slippery, slick, deceitful, deceptive, duplicitous, dishonest, disingenuous, Machiavellian

North American snide

informal foxy, shifty

British informal fly, dodgy

South African informal slim

NZ Australian informal shonky

rare subtle, carny