Gameplay Mod Copper

Copper's biggest drop since the Cooperative Update makes some significant changes:

• Nightmare difficulty has been wholly revamped. The 50 max HP nerf is gone, and in its place are mean, mean bespoke upgrades to every monster that enhance them in their roles. Vorepods follow you to the ends of the earth, Zombies never permanently die, and even Rotfish are deadly.
• Alkaline has one, Arcane Dimensions has one, and now Copper has a custom CSQC-based heads up display, too. Classic and modern (Ironwail/Rerelease) layouts supported. It shows you how many keys you have!
• A boatload more stuff for mappers: Alkaline-style "impulse" debug triggers, func_trains that can follow bezier curves, the Alternate Target Pattern for even more power when scripting your levels, a debris emitter, a light and alpha fader, and more.
• Fixed each and every single bug, just like last time

View the complete changelist at http://lunaran.com/copper/history/ and start trying to beat all your favorite maps on skill 3 again.

Copper has gotten a giant maintenance release. Notable bugfixes:

• Toggling func_walls crashing large maps
• Nailgun aim angle not quite matching the crosshair
• Fiends not leap-attacking aggressively enough
• Trigger-spawned scrags disappearing if they had a "wait" or "rand" spawn delay and were sufficiently low above a func_void
• A bunch of half-baked problems with shootable monster_boss like firing targets on death or crashing the game when infighting
• All that text that would print when you impulse 100'd something

The complete list is in the readme, or viewable online at http://lunaran.com/copper/history/.