I used to main the splatterscope chargers, here's a few tips:
I've seen quite a few wasted wails. I know they come quite frequently when you're playing Kelpscope but they're crucial in taking people off the tower. At the :40 mark i'd have fired the Wail to chase the blaster off, but you got them anyway so yeah. I'd absolutely have fired the wail at the tower at 5:20, seeing as the game was in overtime and there were actually regaining map control at the end there.
1:24-ish is really well done! The rest of your team went ded but you managed to still defend and take down quite a few squids in the process. kudos!
2:35, once that guy tried to climb the tower i'd definetly have SJ'd out of there, esp. that you got surrounded by 3 enemies at close range.