So how tough are ya? So i decided to buy Repelling Bastille once and all and test it against Infested. Even with -60% power strength (the game claimed overextended was reducing it by 61%, thus why i said 39% in the video) i hardly had to deal with infested running past without getting repelled. Some things to note/tips:
1. Infested still have a bug (or intended change DE dosn't want to talk about) where infested enemies can drop out of bastille for no reason even if there is plenty left on the duration, as shown several times in this video. This has nothing to do with the mod, thus they were not counted in my conclusion that only a couple dozen resisted the effect. 2. For Grineer and corpus, it may be more viable to substitute one of the mods in my build for stretch, giving you maximum range possible, such as dropping out Narrow Minded. 3. Grineer are very aggressive at this point, due to their 'better' AI which makes them gang up on you in groups, taking down even 1k shield in just a few moments. It may be wise to use a maximum duration build with this instead, so you have tiny bastilles blocking off checkpoints, preventing grineer from getting past and overwhelming your group.
I was using a 5 forma, full heat Ignis with a almost fresh Kohmak with only damage an multishot mods on :p