There was a time where I was just obsessed with World War II games, and I would actively seek out pretty much anything that had a WWII setting: the first three CoDs, Medal of Honor, Axis & Allies, even less notable stuff like Blazing Angels. Then, I dug too deep into the bargain bin and somehow wound up with Hour of Victory.
Imagine a really shitty, zero-budget PS2 port of Call of Duty 1, haphazardly port it to Unreal Engine 3 and then release it on the Xbox 360 in 2007. The only unique mechanic the game offers is that you can choose between one of three characters who each have special abilities that let you traverse the level in different ways, but then the levels are so linear it doesn't matter anyway. Graphics weren't terrible looking at screenshots, but the game itself runs like cold molasses, hitting single digits when too much is going on. Gunplay is stiff, guns have no punch, enemies are brain dead and either stand in the open shooting you or running at you to melee, It was kinda funny how melee attacks were an instant kill on basically any enemy and they would groan like they sprained their ankle when dying, and the cutscenes are so poorly animated they're hilarious, but that's about it for entertainment.
Here's a review from JarekTheGamingDragon. He actually managed to finish the game, whereas I gave up on the tank level because the controls were way too stiff and the enemies kept wrecking me, even though up until that point the game was a cakewalk.
Easily the most objectively bad game I've ever played.