Posted December 25 2013 - 08:50 AM
As far as items, find what works best for you, try and supplement your weaknesses with items. The tuning tips provided so far are pretty good.
Grenadier really shines in Siege and on some maps in MA and TDM. Support your team and don't get caught on the front lines, try and spread your shots when shooting at a clustered team otherwise you will make it far too easy to dodge your bombardments.
Majority of your damage will come from your GL so make sure every shot counts. The Grenadier's primaries all build heat very quickly so be careful with how much you use them, you never know when someone might get in close, that is when you really need the most heat capacity. Even with the short cool down with cooling units, overheating in a close in fight can get you killed really easily. Proper positioning with the grenadier, much like other C-classes and in some respects more so, is very very important.
When using rev-GL A-classes will try and pounce on you a lot. Don't get caught up trying to bounce rev-gls at the a class. Make sure you hit them directly in the face with your GL every time, it will make short work of them.
Each individual rev-gl nade and GL nade does substantial damage if you hit someone with it so keep that in mind (direct damage > splash). Be patient wait for their dodges and hit them at the end of their dodge (you can also try and force dodges with rev-gl and then hit them with GL when they can't dodge), don't put all your energy into trying to pre fire where you think they will dodge, focus on getting reliable direct hits.
Hope this helps!