In normal tests, angular lasers are really annoying. But there's nothing here but lasers, and that's what the test is about. All lasers should be carried out at an angle of 45° or 90° , so it's not difficult. BUT it uses unique mechanics, so you'll have to think carefully.

I hate laser angle puzzles. I got past first room, but 2nd room already I couldn't get them lined up anymore.

Yes, they need to be burned before they start shooting.
When you land, the sight should already be pointed at the side turret.
From the last turret you can hide behind the cube.

Dexterity I suppose. I tried using a laser and cube to burn the turrets, but the pushback from their bullets pushes me away from the laser.

Can't you think of a way? Or just not enough dexterity?
F6 - Quick save

I got through the first 3 rooms, but I can't kill the turrets.

Сяп :3
Продолжил, объединил отражение лазеров с левитирующими кубами.
Получилось лютое испытание - LEVITATING CUBE - HARDEST TEST

Интересная карта, продолжай в том же духе!