For people who dislike Skadoosh spamming or grinding, here's another way. Put all points into strength, only use SAA the belly smash, it's op. Never underestimate the belly.
it's a good game but it's rather too easy. Having the active barrier with upgraded gadget is virtually invincible, and slow-time becomes nearly useless. Switching perks is needed for some challenge
(and I personally think the first gun is the best ^^)