Pretty fun. The art style and implementation of scrolling are the best features of the game tho, the puzzle aspect can get a bit tedious especially with the levels where you have long horizontals with sums in the twenties.
just beat the game with the assassin class, was a bit rough (excluding mission 13). In mission 14 the tank class was the main issue but if you manage to outrange them it is possible. I think the best sniper weapon (AWP) would help with this but I managed with the Dragu. Also the secondary of the assassin should be the knife, bat etc. and the kill streak should be brief invincibility - the attack chopper is pretty underwhelming. Dunno if these are still issues in the sequel but just felt like sharing some thoughts :c