You can use something like Picasa to resave the images as jpg (have to go into options to tell Picasa to looking for .png files) if you don't have something like photoshop to resave them.
The demon guy is my character. He's called a Herald of Xotli and is sort of a mage/melee hybrid, though he only has like two spells. He can only wear cloth, which kind of sucks, and pretty much only uses great swords. The "story" behind a Herald of Xotli is he is an avatar for a demon/demon god or something like that, so he's basically possessed. You can get an ability called Desecrating Essence that lets you take the demon's form and it buffs you up and gives you an aoe fire damage aura. All the magic damage done by this character is fire damage. The main spell (and almost only spell) you use is called Hell Breath, which after you put five points into it's casting time, turns it into an almost instant cast front conal (90 degree) damage spell that hits enemies that are standing right in front of you. It's a fast spell that does pretty decent damage that you can cast every 5 seconds.
The naked chick in the last screenshot is a demonologist's succubus. They basically summon a demon pet. If you're a male demonologist, then your demon is a succubus (female), and if you're a female demonologist, then your demon is an incubus (male). I don't know too much about the class, but people are complaining about them being underpowered end game, but that will probably be tweaked, seeing as how the game JUST came out.
The official forums for the game are still locked to subscribers only, but I think they'll open them up eventually. They're just wanting to get feedback and stuff from actual players at the moment, which is why they also haven't started doing the friend trial keys.
Required
OS: Windows Vista/XP
Processor: 3GHz Pentium IV
RAM: 1GB RAM
Video Card: Shader Model 2.0 and 128MB RAM: NVIDIA GeForce 5800 or ATI 9800
Recommended
Processor: Intel Core 2 Duo 2.4 GHz (E6600) or better
Video Card: NVIDIA GeForce 7950GX2 or better
RAM: 2GB or more
I really wouldn't try running this on any less than a 7900 series video card. Even then, it will still have some issues. You need a really good system for the game to run well with super high settings. The video card is very important, and as usual, I'd recommend an 8800GT with 512mb ram.
To get the game to run at 30-60 fps average with the settings used in those screenshots (will sometimes drop to 20 in the "Iron Forge" of the game, Old Tarantia, or 150+ in dungeons), here are my computer specs: Q6600 Core2Quad (2.4ghz) cpu, Asus P5N-E SLI motherboard, 4gb ram, WD Raptor 150gb 10k rpm hd, BFG 8800GTOC 512mb video card, Sound Blaster X-Fi Platinum, and Windows Vista Home Premium 64-bit.