Lythiium's channel

@synal The spy has limited mobility, and firepower, as well as very low hp. Teams pick spy occasionally when they're stuck in stalemate (both teams waiting for the other to push), simply to get a high priority pick on the enemy team - like a medic (especially with 100%), or demo, just to make it...

@papermaniacs It's actually the Battalion's Backup - You take damage to fill rage, and when you use it, you and nearby teammates take 35% less damage, and you're immune to crits

The one papermaniacs mentions is the Buff Banner, which is the opposite to the Backup - Deal damage to fill, then you ...

@clinton699

This was actually uploaded a year before the Mann-Conomy update (which the Rocket Jumper was added) - Infact, 3 months before Solder/Demo War update. Which leaves us with stock weapons.

And, note the fact, in some part, he takes a small bit of damage, before he does anything - which t...

@Lythiium Though, I think only the one in the video is a genuine 'impossible room'. I think the others are just to change the lighting... No idea why they couldn't turn them on/off without it...