True, Never dash a Grievous head on as mundi
Ever.
Also, online in hero assault, try pressing F4 (Not Alt+F4) to a bot so they follow you, then when you're in the middle of something like a block fight (e.g when they won't stop blocking then pushing and are waiting for you to take your block off or run so they can push you) then in that situation your friendly ai partner will spam saber throw at them from your side until they're dead, you don't get points for it but your team does, plus it's funny.
In addition, bots are resistant to push and pull powers, meaning it's difficult for your opponent to get them out of the way without making themselves vulnerable to you.