Mirror Temple

Mirror Temple is the 5th main level in Celeste and forms both the 5th and 6th stages of the main any% route. It contains a wide variety of unique obstacles, including entities known only as "doors", red bubbles, which function similarly to the green bubbles from Golden Ridge except their range is unlimited, seekers, indestructable enemies which can fly in any direction. Furthermore, 5A and 5B contain "Theo sections" where Madeline must carry a helpless Theo through each room. Finally, the level contains zip blocks, which function similarly to traffic blocks from Forsaken City with the exception that dashing anywhere activates them instead of touching them.

Temple A includes the YEET, a very visually impressive strat which involves hypering off a zip block to obtain a great rightwards velocity, bunnyhopping off a platform, then performing an upwards ultra into a diagonal cornerboost to maintain the momentum into the next room, allowing the zip block in that room to be skipped entirely. It also contains some skips such as searchskip and double bubble skip which are obsolete in any% and are now only used in 5A ILs.

The Mirror Temple is of particular interest because of its implications for the any% route. Firstly, completing a level's B-Side will unlock the following level, just as completing the level's A-side does. In 5A, the tape room is reasonably close to the beginning, and 5B is significantly shorter than 5A. The optimal route is, therefore, to obtain the tape in 5A to unlock 5B, quit out of the level, then complete 5B. Mirror Temple is not unique in this regards; this is also true of Reflection, but is generally not done there for a number of reasons.

However, 5B contains the legendary zero-key skip, which avoids picking up either of the two keys in the level and which saves approximately 19 seconds over skipping only one key and which is required for the route to save time. This requires traversing a corridor of spikes. For a time, a pixel-perfect cornerboost was used to jump through it. This is extremely difficult and a failure causes 12 seconds to be lost, so, despite the possible gains, very few players attempted the route due to the incredibly high risk involved. However, DemoJameson eventually found an alternative version of zero-key skip which is slightly slower but far more consistent. In this new method, a bubsdrop -- previously believed to be useless -- is used to exit and re-enter the screen using an exit intended to be one-way, then a suicide is performed, which causes Madeline to respawn-warp past the spike corridor. Once this was discovered, the 5B route finally became widely used.

Clear IL WR Progression (5A)

Name	Time	Date	Days Standing
Buhbai	5:29.324	20/2/2018	20
Hornlitz	5:13.004	12/3/2018	3
Yp	4:50.479	15/3/2018	4
TGH	4:46.926	19/3/2018	13
TGH	4:41.197	1/4/2018	6
Buhbai	4:36.913	7/4/2018	9
Buhbai	4:35.468	16/4/2018	5
Buhbai	4:28.362	21/4/2018	28
TGH	4:23.585	19/5/2018	63
Buhbai	4:22.276	21/7/2018	11
DemoJameson	4:18.111	1/8/2018	2
DemoJameson	4:12.994	3/8/2018	15
TGH	4:12.926	18/8/2018	9
TGH	4:09.475	27/8/2018	10
TGH	4:08.744	6/9/2018	69
Fladervy	3:59.615	14/11/2018	20+

Note: Revolucion had 4:20 as a WR at some point, but the video appears to have been taken down so it is not known when the run happened and it is therefore not included in the table.

B-Side IL WR Progression (5B)

Name	Time	Date	Days Standing
Angrevol	3:28.743	22/2/2018	127
Revolucion	3:20.481	29/6/2018	31
Revolucion	3:01.118	30/7/2018	2
Revolucion	2:51.377	1/8/2018	22
Revolucion	2:39.868	23/8/2018	32
Revolucion	2:37.947	24/9/2018	31
Blackpear420	2:31.215	25/10/2018	22
Problemstrol	2:24.823	16/11/2018	1
Problemstrol	2:23.310	17/11/2018	17+

C-Side IL WR Progression (5C)

Name	Time	Date	Days Standing
Seckswrecks	30.243	16/2/2018	4
Angrevol	24.905	20/2/2018	5
DiTThO	23.409	25/2/2018	166
Buhbai	22.627	10/8/2018	116+

Full Clear IL WR Progression

Name	Time	Date	Days Standing
Roofon	23:13.796	22/4/2018	8
Roofon	18:15.854	1/5/2018	1
TeDeMos	16:13.454	2/5/2018	4
TeDeMos	13:36.153	6/5/2018	101
Buhbai	10:01.154	15/8/2018	111+