Here is the full list of all 500 Crazy Alien achievements.
You saved 499 animals
You saved 500 animals
You saved 498 animals
You saved 497 animals
You saved 496 animals
You saved 495 animals
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You saved 458 animals
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You saved 455 animals
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You saved 450 animals
You saved 448 animals
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You saved 401 animals
You saved 400 animals
You saved 399 animals
You saved 398 animals
You saved 397 animals
You saved 396 animals
You saved 395 animals
You saved 394 animals
You saved 392 animals
You saved 393 animals
You saved 391 animals
You saved 390 animals
You saved 389 animals
You saved 388 animals
You saved 387 animals
You saved 386 animals
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You saved 383 animals
You saved 382 animals
You saved 381 animals
You saved 380 animals
You saved 379 animals
You saved 378 animals
You saved 377 animals
You saved 375 animals
You saved 376 animals
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You saved 371 animals
You saved 372 animals
You saved 370 animals
You saved 369 animals
You saved 368 animals
You saved 367 animals
You saved 365 animals
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You saved 364 animals
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You saved 361 animals
You saved 360 animals
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You saved 358 animals
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You saved 352 animals
You saved 351 animals
You saved 350 animals
You saved 349 animals
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You saved 347 animals
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You saved 342 animals
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You saved 340 animals
You saved 338 animals
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You saved 337 animals
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You saved 335 animals
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You saved 314 animals
You saved 312 animals
You saved 311 animals
You saved 309 animals
You saved 310 animals
You saved 307 animals
You saved 308 animals
You saved 306 animals
You saved 305 animals
You saved 304 animals
You saved 303 animals
You saved 302 animals
You saved 301 animals
You saved 300 animals
You saved 299 animals
You saved 298 animals
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You saved 293 animals
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You saved 292 animals
You saved 291 animals
You saved 289 animals
You saved 290 animals
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You saved 284 animals
You saved 282 animals
You saved 283 animals
You saved 281 animals
You saved 280 animals
You saved 278 animals
You saved 279 animals
You saved 277 animals
You saved 276 animals
You saved 275 animals
You saved 273 animals
You saved 274 animals
You saved 272 animals
You saved 271 animals
You saved 270 animals
You saved 269 animals
You saved 268 animals
You saved 267 animals
You saved 266 animals
You saved 265 animals
You saved 263 animals
You saved 264 animals
You saved 261 animals
You saved 262 animals
You saved 260 animals
You saved 259 animals
You saved 258 animals
You saved 257 animals
You saved 256 animals
You saved 255 animals
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You saved 252 animals
You saved 251 animals
You saved 250 animals
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You saved 247 animals
You saved 246 animals
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You saved 240 animals
You saved 241 animals
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You saved 238 animals
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You saved 236 animals
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You saved 223 animals
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You saved 212 animals
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You saved 210 animals
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You saved 203 animals
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You saved 198 animals
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You saved 195 animals
You saved 194 animals
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You saved 191 animals
You saved 192 animals
You saved 190 animals
You saved 189 animals
You saved 187 animals
You saved 188 animals
You saved 186 animals
You saved 185 animals
You saved 184 animals
You saved 183 animals
You saved 182 animals
You saved 180 animals
You saved 181 animals
You saved 179 animals
You saved 178 animals
You saved 177 animals
You saved 175 animals
You saved 176 animals
You saved 174 animals
You saved 173 animals
You saved 172 animals
You saved 171 animals
You saved 170 animals
You saved 169 animals
You saved 168 animals
You saved 166 animals
You saved 167 animals
You saved 165 animals
You saved 164 animals
You saved 163 animals
You saved 162 animals
You saved 161 animals
You saved 160 animals
You saved 159 animals
You saved 158 animals
You saved 157 animals
You saved 156 animals
You saved 155 animals
You saved 154 animals
You saved 153 animals
You saved 152 animals
You saved 151 animals
You saved 150 animals
You saved 148 animals
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You saved 142 animals
You saved 141 animals
You saved 140 animals
You saved 139 animals
You saved 137 animals
You saved 138 animals
You saved 136 animals
You saved 135 animals
You saved 134 animals
You saved 133 animals
You saved 132 animals
You saved 131 animals
You saved 130 animals
You saved 129 animals
You saved 128 animals
You saved 127 animals
You saved 126 animals
You saved 125 animals
You saved 124 animals
You saved 123 animals
You saved 122 animals
You saved 121 animals
You saved 120 animals
You saved 119 animals
You saved 118 animals
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You saved 115 animals
You saved 116 animals
You saved 114 animals
You saved 113 animals
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You saved 111 animals
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You saved 109 animals
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You saved 106 animals
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You saved 102 animals
You saved 103 animals
You saved 101 animals
You saved 100 animals
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You saved 94 animals
You saved 92 animals
You saved 93 animals
You saved 91 animals
You saved 90 animals
You saved 89 animals
You saved 88 animals
You saved 87 animals
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You saved 81 animals
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You saved 11 animals
You saved 10 animals
You saved 9 animals
You saved 8 animals
You saved 7 animals
You saved 6 animals
You saved 5 animals
You saved 4 animals
You saved 3 animals
You saved 2 animals
You saved the animal