EC paths

EC1 - ID/Active
EC2 - TD/Active
    within about 10-15m if it's not done but close, then keep using active
    within about 10-15m if it's nowhere near done, then resort to idle
    or: use Idle for later completions
EC3x1: ND/Passive, 2+: ID/Active
EC4 - TD/Idle
    ID could be used for the first completion as you usually don't have 171, or even the second
EC5 - ID/Active
    For the first EC5, you usually do not get anything in the first split. On the second one, you may have the first split, and from there on you should be getting to active.
EC6 - ID/Active
    Apparently, you need the e40 EP upgrade before attempting 6x5 or even 6x4.
    Make sure you're buying max RGs and make sure you're buying dimboosts.
EC7 - ND/Active
    Active for the first few, and Idle if needed.
EC8 - TD/Idle
    This one is special. People recommend for the last few EC8s (usually 3-5, sometimes even 2), to not get any studies past 133 (replicanti slowdown). Then you get all of your RGs and then buy the studies. Basically, only buy the absolute minimum studies (both 21 and 22 route simultaneously are fine) to unlock EC8, then get the rest of the studies.
    Purchases needed for EC8. 9 chance means get it to 9% chance. Credit to Slabdrill
https://cdn.discordapp.com/attachments/408764187960147982/429367941155258389/unknown.png
EC9 - TD/Active
    Same idea from EC7 applies.
    For the first few EC9s, you do not use study 181.
    Remember, EC9 costs infinity power, not infinity points, to unlock.
EC10 - ND/Active
    EC10 is usually regarded as the EC4 unlock, but in a challenge. Do what you do for EC4 to unlock, but...yeah, in a challenge
    For the love of god read the challenge description.
    ND/Idle for when you have uncapped Replicanti, as the downside of Idle only applies pre-e308