The leading force in Gunnars hold
How to get agony resistance
The leading force in Gunnars hold
This is a special stat that is only used in the Fractals dungeon. You get +Agony Resistance from 80th gear that is Infused Ascended or from Infusions, which are inserted into any grade of Ascended gear. (Although I believe that Ascended infusions that were added to the WvW vendors doesn’t have +AR on them.) Normally +AR comes in +5 increments. Multiple sources of +AR do stack.
1) If you’re wondering about the ratio between your AR value and how it interacts with preventing Agony damage (in the Fractals), refer to the excellent chart in the Wiki. http://wiki.guildwars2.com/wiki/Agony_resistance
2) Unless you plan on running through the Fractal dungeon (which is a series of randomly accessed mini dungeons), you don’t need to have AR.
3) For the Infusions, you need to make them in the Mystic Forge if you want +AR on them. (Scroll down to the bottom of this web page.) http://wiki.guildwars2.com/wiki/Mystic_Forge/Equipment
4) Or once you get a piece of Ascended gear, you can use the Mystic Forge to upgrade it to an Infused status. This grants the item an inherent +5 AR (in addition to anything an Infusion would provide). http://wiki.guildwars2.com/wiki/Infused
do i specifically need an ascended weapon, and cant i just infuse a exotic trinket?
The leading force in Gunnars hold
do i specifically need an ascended weapon, and cant i just infuse a exotic trinket?
1) As of right now, Ascended weapons don’t exist. The top tier is Exotic in terms of game stats. Technically you can get a Legendary weapon, which would automatically have its stats upgraded from Exotic grade to Ascended grade if ArenaNet did choose to release Ascended weapons.
2) As of right now, Ascended armor doesn’t exist. The top tier is Exotic in terms of game stats.
3) So to answer your 1st question, no. You don’t need an Ascended weapon since they don’t exist.
4) In regards to your 2nd question, no. It is impossible to do an Infused upgrade on a non-Ascended gear piece. The entire of point of the Agony Resistance system is to create an artificial barrier of entry. Some people whined about not having enough gear treadmills in GW2, so ArenaNet added Ascended gear. While the initial level of Ascended does increase your PvE / WvW stats, the AR portion of that gear is worthless to people who don’t live in the Fractal dungeon. If you could upgrade Exotic items, then that would let people avoid large artificial time sinks, which are the entire point of the Ascended gear system. Therefore ArenaNet would never allow something like that to happen.
There are two exotic trinkets that can be upgraded to ascended, the tentacle back piece and the triforge amulet. It is no longer possible to get the tentacle back piece and the triforge is probably more expensive and time consuming than a regular ascended amulet.