Stage 80: Have anyone encounter a bug when you finish killing everything then press the Ok button and then the game keeps freezing?.? I tried on different devices but it didn't work. (Ofc, achievement does not unlock).
Stage 58 and 7x stages (timer ones): Finished on time but there is no perfect achievement button.
Stage 58: https://imgur.com/a/ec7X8
Stage 7x: https://imgur.com/a/hV412
Redoing 5x and 7x stages are fine but the last one is unhealthy at all. Hope Dev Team will fix it soon.