An interesting idea and was entertaining until I realized the unlosable strategy. A few things I might change.
I would probably start the player in the middle if it is just a survival game. The first run I died instantly because it started quite quickly and I didnt have time to get used to controls and dodging. The second run I ran all the way to the right thinking I might have to move from room to room or something but then I hit a wall and died in the corner. Then from that point on, I realized I was meant to just stay in that room and survive. Took me a little time even then to realize I was meant to use the dash to go through/kill enemies and not just avoid them. Just a little bit of a rocky start since I made some assumptions based on other games I played.
And also the whole unlosable strategy part. I never actually used the time freeze but I realized pretty quickly that you didnt put a cooldown on the dash and you also are invincible during it even to projectiles (which is probably necessary), but that means that the player can just spam click to dash constantly on the spot and you are just never in danger from that point on. You can rack up as high of a score as you want without thinking, it could even be automated with an autoclicker, and thats it. I would consider adding either just a cooldown or a few charges and a recharge time, just something to prevent the player from spamming dash so much but also the few charges would let you chain a couple dashes together.
Besides those couple things, the game is pretty interesting, good job