Thanks for playing, the video is really great too so thanks for that.
The lasers I got felt underwhelming (and lagged my PC badly).
Yeah the lasers are really unoptimized and I haven't fixed it so that's not too surprising. But from the video it looked like the exploding bullets SMG really lagged the game too? If that's the case I need to fix it.
From the vid I think you got too few gun drops in the later levels, I'll look it over. Kinda surprised you seemed to get what to do on the last level instantly, I thought I hadn't made it very clear. In the beginning the shield gun is good if you run out of ammo, need to reload, cut through a wall, taking out close enemies. Later its mostly good for blocking projectiles. Its really fast to swap to, so if you for example bind it to Spacebar you can very quickly and easily block em (very good for the actual boss later for example). Can also push swarms of enemies out of the way, you might have been able to escape where you died if you swapped to it and tried to run through.
The enemies in the last level will spawn endlessly and teleport so if you just try to rush the objectives you can get overwhelmed. They also drop powerful weapons, I saw some that dropped that you ran past; a good idea would probably be to have a very noticeable effect when a gun drops actually.