It reminded me a lot of an old NES game I played. It was really fun, and challenging to get through the waves. At wave 3 I kinda gave up because there were so many enemies. 

Some points to think about:

The enemies seem a little bit over powered since they dont make any mistakes. 

Your health doesn't refill after a wave, so you wont make it that far even if you do finish another wave.

Great implementation of mechanics! Feels like a cover based shooter in 2d :D I really enjoyed the game)

Very well done on remake the WoT mechanics.

For me, the enemies are too strong that they always aim at player's tank. Even they are out of the screen.

The BGM is very exciting but it's too loud compare to the gun shots sound effect.

Never played WoT personally, but I did enjoy it. I felt you captured the mechanics perfectly, and the SFX for the gun shots were on point! I couldn't get past level 2, because I suck at keep my front to the enemy!

Well done, great entry.

Nice game, and i liked the soundFX. Maybe, i think, need some arrow in front the tank player to more easier to see where is the front

Well executed mechanic. As a game I wish you added some power ups or repair packs. With some I would of spent way more time playing!