We know grenades are in the game, the titan throws one accidently as he tries to salute.
[url=http://www.bungie.net/7_The-warlock39s-grenade-Needs-technical-assistance/en-us/Forum/Post?id=61154240#referred-SquattingTurtle]The warlock's solar flare ability is pretty much a grenade mapped to the left bumper.[/url]
So how is this going to work? We have three slots:
-An ability mapped to the jump button
-An ability that may be a the grenade ability (left bumper)
-A super ability that is both bumpers.
Are we even going to have a variety of non-SUPER abilities? So far it seams the only one that isn't jump/throw-able is the Main power ability.
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Armor/cloth ratio stuff for guardians. Titan: 80/20 Hunter: 50/50 Warlock: 20/80 ( this info I got from ign. You can look it up ) anyway, this makes me think that because the warlock is lacking in defense, it will end up having a lot of offensive power. It's also very likely the offensive power that they will have will originate from their extra knowledge obtained by the traveler. I just think they will have a greater variety of traveler magic.