It is a slang interjection, a shortened form of the word "вообще". It can be used to express different emotions from suprise to disappointment.

Я ваще ничего не понимаю. - I don't understand nothing. (expresses confusion in situation). Ну ты ваще мужик! - Expresses admiration and maybe respect. Ваще кайф! - espresses rapture and ecstasy.

It means 'at all'

It is a short form of the word "вообще". In different occasions it can have different meanings. The most popular are "at all" (as it was said) and "generally speaking "

Ну ты ваще мужик! =)