Dies to Removal

If Wolfbriar elemental dies to say doomblade when it comes into play can I still use the multikicker ability for the tokens ?

Yes, the kicker ability triggers when the card enters the battlefield. Killing it with Doom Blade won't affect the tokens from being created.

cheers for that, what about counterspells such as remand, do you still get to use the effect from burning tree emmisery or wolfbriar elemental ?

If the creature doesn't enter the battlefield, you don't get the enters the battlefield ability.