The game does have a bit of a balance problem, but as usual the players are not the best at designing the solution.
Railgun was overpowered, since it did literally everything without any risk. The funny thing is - you can still do things it did before, you just need to actually use the unsafe mode.
The armoured bugs are a bit overtuned, the devs have announced they will be looking at them, but just giving you an OP gun is not a way to fix that.
Shield was probably alright as it was, but the current iteration of armour doesn’t really make up for the lack of it.