Those tactics work for the first small area of the game Froogle, but once Ascalon falls and you reach Shiver Peak... basically your screwed fighting on your own, and doubly so if you've not learnt how to effectively use you players skill correctly.
The game itself, is HUGE. When you start out you have Ascalon and somewhere around 40sq miles of game area to explore. There's a huge number of missions/quests you can do as well. Most of which are designed to ease you in to how Guild Wars plays.
You can do basically the whole Old Ascalon area on your own. It's good when your discovering your character and abilities.
You move on to Fallen Ascalon and you have a much larger area to play in. We're talking hundreds of miles of fully explorable world.
There are no limits like other MMO either. As most other RPGs will force you to stay in one area until your high enough level, because high-level monsters will guard areas.
(although I managed to sneak by quite a few in FFXI to get to Juno at only level 8 heh) What's more annoying is that not only do the monsters stop you but also your level can.
This is something I like about Guild Wars, you can go everywhere. There are quick jumps (so you don't have to spend 2hours walking BACK and forth for a simple mission
), and anything you want to buy or use you can. Although items claim they 'require' something, you can use it just not as effectively.
Battle is where the game shines though. If your just sitting there bashing something even the weakest enemies eventally will start taking several minutes to beat. Bombard this same creature with a number of your skills, and you can often kill them within second.
Being attacked by a group learning how to master your skills is essential. This is something that Guild Wars excels at. While you can have a number of skills (my character Tesio has somewhere around 45 skills unlocked in all) you can only carry 8 at once. So optimising your skills per area. Knowing what your enemies will be pays off. It's not going to help you going into an area with mostly undead creatures to use your blood magic.
The European servers for Guild Wars suck. The American Servers suck too, but atleas you can make a party and not only will they want to party but they'll actually be speaking english. (nothing against French and Germans per'say, but I don't like how they'll make fun of you because you can't speak thier language perfectly)
Internation Servers are often the best for friendly people, there's far less people playing on them; but any party you make will be able to survive for hours not half a mission of some retard running off ahead and dying.. then bitching he has no help.