The Weapons Archive, but it features a challenge mode vibe, pits you against three bosses at the same time and can be made easier or harder. Easy mode gives you four E-tanks to ration out together with the weapons, normal mode just gives you the weapons and hard mode is buster only. Consider skipping if you're on the Wily Challenge... If you're crazy enough to have the presets set to Horrible and Despair. I may have messed up one of their weaknesses a bit. Sorry about that.

Yes, I get it, it sucks, but that's the point.