Many notable improvements have been made over the previous version,
9.8.10, such as ultimate Master Traits, alternative fire modes for
most weapons, exiting new challenge modes, and a total revamp of the
player progress system!

Grab it while it's hot in the downloads section on DoomRL's redesigned
webpage!
http://doom.chaosforge.org/

While you're at it why not donate and help me out? My PC is dying and
I'm fundraising for a new one, to have a workspace for ChaosForge.
http://forum.chaosforge.org/index.php?action=treasury

Check out the official announcement and read more about the release…
http://forum.chaosforge.org/index.php/topic,2279.0

Master Traits can be chosen when you have fulfilled the prerequisite
traits. They alter the way in which you can play DoomRL by giving a
positive effect, but blocking some other traits from being chosen! An
example is the new Ammochain trait, which allows you infinite ammo
from your rapid-fire weapons, but blocks the Eagle Eye trait. You turn
into an inaccurate ammo-spitting horror!

The Ranks system has been totally overhauled, now working on a "Badge"
system (unfortunately breaking compatibility with the old player and
score data). Feats for acquiring badges range from winning the game on
ITYTD to beating Angel of 100 on Nightmare! in under one hour! There
are 95 badges for players of all skill levels, so if you don't feel up
to the challenge of clearing the City of Skulls on Ultra-Violence, why
not try it on Hurt me Plenty?

Alternative fire modes, implemented for most basic weapons (and many
uniques!) enhance your tactical possibilities. Pistols now have aimed
shot, rocket launcher has the famous rocket-jump, knives can be
thrown, but the most drastic change is the chain-fire alternative mode
for rapid fire weapons -- feel the dakka when rapid-firing!

In addition, other changes have found their way into 0.9.9, such as
multiple new unique items, unique item sets, unique item modification,
new barrel types, damage types, and a totally new mod system,
consisting of the Agility, Power, Bulk and Technical mods.

Linux version is also available, however the sound version is still
unstable -- the ChaosForge team is working on it!

Be sure to check out the revamped forum and blog too!
http://forum.chaosforge.org/
http://blog.chaosforge.org/

Full change list:

v.0.9.9
[add] -- TR#003: Master Traits implemented!
[add] -- TR#002: enhanced traits pick menu!
[add] -- TR#001: items sets implemented!
[add] -- TR#065: Phaseshift set, Gothic set, Angelic Set
[add] -- TR#023: Skill rank system blown up -- now badge-based, and 19
levels!
[add] -- TR#023: Badges galore! 95 badges to aquire!
[add] -- TR#---: Two new unique weapons, two new unique armors, unique
modpacks
[add] -- TR#080: real-time total player time tracking
[add] -- TR#022: enhanced kills player page
[add] -- TR#020: New enhanced player and score files!
[add] -- TR#022: Uniques in player data!
[add] -- TR#023: Medals!
[add] -- TR#029: player.wad and score.wad backup
[add] -- TR#076: Mods made multi-purpose!
[add] -- TR#078: Melee weapons can now be modded!
[add] -- TR#270: Angel of Shotgunnery and Angel of Max Carnage
[add] -- FS#279: Two new kinds of barrels!
[add] -- FS#---: Alternative Reload descriptions
[add] -- FS#---: Alternative Fire Modes (Chain fire!)
[mod] -- FS#---: Chaingun fires now 4 shots, Plasma 6 shots, plasma
accuracy+1
[mod] -- TR#096: Dodge master as advanced trait, Gun Kata requires
Dodge Master
[mod] -- TR#096: CatEye returns as master trait, removed Regenerator
[mod] -- TR#096: Cacodemon blast smaller
[mod] -- TR#096: Plasma now halves armor (plasma weapon damage reduced
a bit)
[mod] -- TR#096: Vaults now have a teleport in the middle vault
[mod] -- TR#---: enemies no longer hunt useless items
[mod] -- TR#086: Targeting changed -- if last turn you aimed at an
empty coord, it will reaim
[mod] -- TR#---: AoD and AoDD removed
[mod] -- TR#---: AoRA time reduced to 4 minute
[mod] -- TR#---: Rebalanced unique items
[mod] -- TR#---: Minigun can now be modded, many uniques can be modded
once
[mod] -- TR#---: BFG9000 now has half knockback, BFG10K made a true
ass-kicker
[mod] -- TR#---: brute now gives +2 melee hit chance
[mod] -- TR#---: broken player dats are now marked as such, instead of
removing
[mod] -- TR#---: added more sensible arena final reward for AoB and
AoMr
[mod] -- TR#---: Angelic Armor no longer can be destroyed when worn
[mod] -- TR#---: Finesse now gives 15% bonus
[mod] -- TR#---: Intuition is now 2-level
[mod] -- TR#076: removed traited (e.g. rapid) weapons
[mod] -- TR#062: items dropped on or flooded by acid/lava will now be
destroyed
[mod] -- TR#004: sound now via FMOD (should fix some crashes!)
[mod] -- TR#055: armor damage reduced for better armors
[mod] -- TR#054: shotgun damage upped to 8 dice
[mod] -- TR#013: overcharged bfg's have +20 damage, plasmas +2
[mod] -- FS#276: Cybie, AoD, JC have now upped health on higher
difficulty levels
[mod] -- FS#268: natural attacks are now stored as weapons
[mod] -- FS#---: monsters now have different (configurable) attack
chances
[mod] -- FS#---: cacodemon missiles are now easier to sidestep
[mod] -- FS#---: Knife has now a +1 accuracy bonus
[mod] -- FS#---: Badass is now a single level trait that stops Health
degradation
                 and gives a bonus to knockback stopping.
[mod] -- FS#---: Barons and knights are now acid resistant
[mod] -- FS#---: LookMode descriptions are now complete
[mod] -- FS#263: Visual and message warning of ending power up
[mod] -- FS#---: Acid damage damages armor twice as fast
[mod] -- FS#---: Sharpnel damage (shotguns) is affected *2 by armor
[mod] -- FS#---: Explosions from missiles hitting walls now happen a
square before the wall
[mod] -- FS#---: made Megasphere more often
[mod] -- FS#---: Player level 20 achieveable, exp view is MAX at 20
[mod] -- FS#274: Message is printed when an unique is destroyed by an
explosion
[fix] -- FS#---: Enemy Melee attacks now properly use the difficulty
toHit bonus
[fix] -- TR#---: double level bug fixed
[fix] -- FS#---: toHit values now properly displayed
[fix] -- FS#262: LS is no longer seen from outside of the Cathedral
[fix] -- FS#253: Inventory view no longer crashes when empty
[fix] -- FS#251: Screenshots record dots properly now
[fix] -- FS#252: Envirosuit can no longer be carried on AoI
[fix] -- TR#006: screenshots fixed