Egor305's records

Challenge	13	14	15	16	17	18
Portals	4	2	14	2	0	14
Steps	10	9	49	36	148	85
Time	19	6	51	52	66 (1:06)	73 (1:13)

Still Alive
Complete Course 4 with neither you nor your co-op partner dying

Difficulty: Very Hard
How to obtain: Get through the excursion funnels course in one run... with no deaths. Watch out for test chambers:

3 Voice chat, the timer, and a clear understanding of the course/practice are highly recommended.
6 Make sure you do not make a very common mistake. Do not go into the spikes at the end of the excursion funnel/practice.
8 This is a trust test so do not fool around. It's easy if you try/practice.
9 Do not shoot the wrong portal whether you are doing the Hard Light shields or the funnels... practice. Also, don't try to get Party of Three (see above).

Practice on all of these stages! That cannot be stressed enough!