The new content for Blue Isle Studios' Citadel: Forged With Fire includes a beast that you definitely don't want to tackle without a lot of healing items: the Great Golem. It'll be hard even with friends; the thing is a goliath of stone and wood that just woke up from hibernation, and it doesn't take kindly to those who invade its personal space.
Great Golems are high level opponents who are formidable both at close range and at a distance, so don't expect to find yourself at a huge advantage in either place. Once you get close enough, you can either run away or engage, but running isn't exactly a piece of cake. It's a tough battle, but upon success you'll get a lot of valuable building resources, precious stone, and even light essence!
Citadel: Forged With Fire is currently an Early Access title on Steam.