Viridian Luvs Spikes: really really hard room with loads of spikes.
You're Lonely: empty room (requires "So Have A Friend Or Two" after)
So Have A Friend Or Two: room with loads of enemies (requires "You're Lonely" before)
Seriously Spikey Showers: upwards-falling-spike-dodging-room-thing
Half-Life 3: room with delay(1000) everywhere
These are great!

You are now in the credits!
Viridian Luvs Spikes: really really hard room with loads of spikes.
Hmmph. I'll use it sometime.You're Lonely: empty room (requires "So Have A Friend Or Two" after)
So Have A Friend Or Two: room with loads of enemies (requires "You're Lonely" before)
Yep. This probably will be used.Seriously Spikey Showers: upwards-falling-spike-dodging-room-thing
Yeah, okay. This sounds good.Half-Life 3: room with delay(1000) everywhere
BWAHAHAHAHAHAA.... Whew, that's funny. But I'm not going to use it.